Give up on a test that's too fuzzy on win and OSX for now. CLOSED TREE

Will try to reland it fixed.

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1544242
gecko-commit: 6c59557f4033ec64ca701ebaeaa429f8659cd70e
gecko-integration-branch: autoland
diff --git a/css/css-lists/nested-marker-content-ref.html b/css/css-lists/nested-marker-content-ref.html
deleted file mode 100644
index ffb3f7d..0000000
--- a/css/css-lists/nested-marker-content-ref.html
+++ /dev/null
@@ -1,26 +0,0 @@
-<!doctype html>
-<title>CSS Test Reference</title>
-<link rel="help" href="https://drafts.csswg.org/css-lists/#list-item">
-<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
-<link rel="author" href="https://mozilla.org" title="Mozilla">
-<style>
-  ul {
-    font: 16px / 1 monospace;
-  }
-  div {
-    display: inline-block;
-  }
-  div div {
-    list-style-type: initial;
-    display: list-item;
-  }
-  li {
-    list-style-type: none;
-  }
-</style>
-<ul>
-  <li><div><div>Foo</div></div>Bar
-<script>
-  // 100px from the ref.
-  document.querySelector("ul").style.marginLeft = 100 - document.querySelector("div div").offsetWidth + "px";
-</script>
diff --git a/css/css-lists/nested-marker-content.html b/css/css-lists/nested-marker-content.html
deleted file mode 100644
index 2000bdb..0000000
--- a/css/css-lists/nested-marker-content.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!doctype html>
-<title>CSS Test: Nested ::marker with `content` property generates another ::marker</title>
-<link rel="help" href="https://drafts.csswg.org/css-lists/#list-item">
-<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1539171">
-<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1543758">
-<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
-<link rel="author" href="https://mozilla.org" title="Mozilla">
-<link rel="match" href="nested-marker-content-ref.html">
-<style>
-  ul { margin-left: 100px; font: 16px / 1 monospace; }
-  ::marker {
-    display: list-item;
-    content: "Foo";
-  }
-</style>
-<ul>
-  <li>Bar