Issue 6870 - Remove support for legacy :-abp-properties() syntax

lib/filterClasses.js

Index: lib/filterClasses.js
===================================================================
--- a/lib/filterClasses.js
+++ b/lib/filterClasses.js
@@ -120,31 +120,17 @@
 Filter.fromText = function(text)
 {
   let filter = Filter.knownFilters.get(text);
   if (filter)
     return filter;
 
   let match = text.includes("#") ? Filter.contentRegExp.exec(text) : null;
   if (match)
-  {
-    let propsMatch;
-    if (!match[2] && match[3].includes("[-") &&
-        (propsMatch = /\[-abp-properties=(["'])([^"']+)\1\]/.exec(match[3])))
-    {
-      // This is legacy CSS properties syntax, convert to current syntax
-      let prefix = match[3].substr(0, propsMatch.index);
-      let expression = propsMatch[2];
-      let suffix = match[3].substr(propsMatch.index + propsMatch[0].length);
-      return Filter.fromText(`${match[1]}#?#` +
-          `${prefix}:-abp-properties(${expression})${suffix}`);
-    }
-
     filter = ContentFilter.fromText(text, match[1], match[2], match[3]);
-  }
   else if (text[0] == "!")
     filter = new CommentFilter(text);
   else
     filter = RegExpFilter.fromText(text);
 
   Filter.knownFilters.set(filter.text, filter);
   return filter;
 };