diff --git a/dom/xml/htmlmathml-f.ent b/dom/xml/htmlmathml-f.ent
index 299a6bb6cba2..37b259976955 100644
--- a/dom/xml/htmlmathml-f.ent
+++ b/dom/xml/htmlmathml-f.ent
@@ -124,7 +124,7 @@
 <!ENTITY DifferentialD    "&#x02146;" ><!--DOUBLE-STRUCK ITALIC SMALL D -->
 <!ENTITY Dopf             "&#x1D53B;" ><!--MATHEMATICAL DOUBLE-STRUCK CAPITAL D -->
 <!ENTITY Dot              "&#x000A8;" ><!--DIAERESIS -->
-<!ENTITY DotDot           " &#x020DC;" ><!--COMBINING FOUR DOTS ABOVE -->
+<!ENTITY DotDot           "&#x020DC;" ><!--COMBINING FOUR DOTS ABOVE -->
 <!ENTITY DotEqual         "&#x02250;" ><!--APPROACHES THE LIMIT -->
 <!ENTITY DoubleContourIntegral "&#x0222F;" ><!--SURFACE INTEGRAL -->
 <!ENTITY DoubleDot        "&#x000A8;" ><!--DIAERESIS -->
@@ -143,7 +143,7 @@
 <!ENTITY DownArrow        "&#x02193;" ><!--DOWNWARDS ARROW -->
 <!ENTITY DownArrowBar     "&#x02913;" ><!--DOWNWARDS ARROW TO BAR -->
 <!ENTITY DownArrowUpArrow "&#x021F5;" ><!--DOWNWARDS ARROW LEFTWARDS OF UPWARDS ARROW -->
-<!ENTITY DownBreve        " &#x00311;" ><!--COMBINING INVERTED BREVE -->
+<!ENTITY DownBreve        "&#x00311;" ><!--COMBINING INVERTED BREVE -->
 <!ENTITY DownLeftRightVector "&#x02950;" ><!--LEFT BARB DOWN RIGHT BARB DOWN HARPOON -->
 <!ENTITY DownLeftTeeVector "&#x0295E;" ><!--LEFTWARDS HARPOON WITH BARB DOWN FROM BAR -->
 <!ENTITY DownLeftVector   "&#x021BD;" ><!--LEFTWARDS HARPOON WITH BARB DOWNWARDS -->
@@ -550,7 +550,7 @@
 <!ENTITY TildeFullEqual   "&#x02245;" ><!--APPROXIMATELY EQUAL TO -->
 <!ENTITY TildeTilde       "&#x02248;" ><!--ALMOST EQUAL TO -->
 <!ENTITY Topf             "&#x1D54B;" ><!--MATHEMATICAL DOUBLE-STRUCK CAPITAL T -->
-<!ENTITY TripleDot        " &#x020DB;" ><!--COMBINING THREE DOTS ABOVE -->
+<!ENTITY TripleDot        "&#x020DB;" ><!--COMBINING THREE DOTS ABOVE -->
 <!ENTITY Tscr             "&#x1D4AF;" ><!--MATHEMATICAL SCRIPT CAPITAL T -->
 <!ENTITY Tstrok           "&#x00166;" ><!--LATIN CAPITAL LETTER T WITH STROKE -->
 <!ENTITY Uacute           "&#x000DA;" ><!--LATIN CAPITAL LETTER U WITH ACUTE -->
@@ -1964,7 +1964,7 @@
 <!ENTITY tcaron           "&#x00165;" ><!--LATIN SMALL LETTER T WITH CARON -->
 <!ENTITY tcedil           "&#x00163;" ><!--LATIN SMALL LETTER T WITH CEDILLA -->
 <!ENTITY tcy              "&#x00442;" ><!--CYRILLIC SMALL LETTER TE -->
-<!ENTITY tdot             " &#x020DB;" ><!--COMBINING THREE DOTS ABOVE -->
+<!ENTITY tdot             "&#x020DB;" ><!--COMBINING THREE DOTS ABOVE -->
 <!ENTITY telrec           "&#x02315;" ><!--TELEPHONE RECORDER -->
 <!ENTITY tfr              "&#x1D531;" ><!--MATHEMATICAL FRAKTUR SMALL T -->
 <!ENTITY there4           "&#x02234;" ><!--THEREFORE -->
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/__dir__.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/__dir__.ini
deleted file mode 100644
index 4cb0409cc9e6..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/__dir__.ini
+++ /dev/null
@@ -1 +0,0 @@
-lsan-allowed: []
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm.ini
deleted file mode 100644
index a80b80b85641..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-1.htm]
-  [XHTML1.0 Transitional parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML1.0 Transitional parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML1.0 Transitional parsing &tdot;]
-    expected: FAIL
-
-  [XHTML1.0 Transitional parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm.ini
deleted file mode 100644
index 206165e6a4c4..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-2.htm]
-  [XHTML1.1 parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML1.1 parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML1.1 parsing &tdot;]
-    expected: FAIL
-
-  [XHTML1.1 parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm.ini
deleted file mode 100644
index a4d609acacbc..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-3.htm]
-  [XHTML1.0 Strict parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML1.0 Strict parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML1.0 Strict parsing &tdot;]
-    expected: FAIL
-
-  [XHTML1.0 Strict parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm.ini
deleted file mode 100644
index bb6fbcac6b80..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-4.htm]
-  [XHTML1.0 Frameset parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML1.0 Frameset parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML1.0 Frameset parsing &tdot;]
-    expected: FAIL
-
-  [XHTML1.0 Frameset parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm.ini
deleted file mode 100644
index 841739bd775a..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-5.htm]
-  [XHTML Basic parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML Basic parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML Basic parsing &tdot;]
-    expected: FAIL
-
-  [XHTML Basic parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm.ini
deleted file mode 100644
index c60cdd57747f..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-6.htm]
-  [XHTML1.1+MathML parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML1.1+MathML parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML1.1+MathML parsing &tdot;]
-    expected: FAIL
-
-  [XHTML1.1+MathML parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm.ini
deleted file mode 100644
index 0effe909cd0b..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-7.htm]
-  [XHTML1.1+MathML+SVG parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML1.1+MathML+SVG parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML1.1+MathML+SVG parsing &tdot;]
-    expected: FAIL
-
-  [XHTML1.1+MathML+SVG parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm.ini
deleted file mode 100644
index a5db7b814268..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-8.htm]
-  [MathML parsing &DotDot;]
-    expected: FAIL
-
-  [MathML parsing &DownBreve;]
-    expected: FAIL
-
-  [MathML parsing &tdot;]
-    expected: FAIL
-
-  [MathML parsing &TripleDot;]
-    expected: FAIL
-
diff --git a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm.ini b/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm.ini
deleted file mode 100644
index 89470e47d528..000000000000
--- a/testing/web-platform/meta/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm.ini
+++ /dev/null
@@ -1,13 +0,0 @@
-[xhtml-mathml-dtd-entity-9.htm]
-  [XHTML Mobile parsing &DotDot;]
-    expected: FAIL
-
-  [XHTML Mobile parsing &DownBreve;]
-    expected: FAIL
-
-  [XHTML Mobile parsing &tdot;]
-    expected: FAIL
-
-  [XHTML Mobile parsing &TripleDot;]
-    expected: FAIL
-