Bug 1917034 - Adjust Thunderbird code for "Remove some related always-on prefs.". rs=bustage-fix DONTBUILD

mail/test/static/browser_parsable_css.js

@@ -81,24 +81,6 @@ if (!Services.prefs.getBoolPref("layout.css.scroll-anchoring.enabled")) {
   });
 }
 
-if (!Services.prefs.getBoolPref("layout.css.forced-colors.enabled")) {
-  ignoreList.push({
-    sourceName: /pdf\.js\/web\/viewer\.css$/,
-    errorMessage: /Expected media feature name but found ‘forced-colors’*/i,
-    isFromDevTools: false,
-  });
-}
-
-if (!Services.prefs.getBoolPref("layout.css.forced-color-adjust.enabled")) {
-  // PDF.js uses a property that is currently not enabled.
-  ignoreList.push({
-    sourceName: /web\/viewer\.css$/i,
-    errorMessage:
-      /Unknown property ‘forced-color-adjust’\. {2}Declaration dropped\./i,
-    isFromDevTools: false,
-  });
-}
-
 const propNameAllowlist = [
   // These custom properties are retrieved directly from CSSOM
   // in videocontrols.xml to get pre-defined style instead of computed