revert mozdev style override

chrome/content/vimperator/default.css

@@ -88,14 +88,6 @@ fieldset.paypal {
     border: none;
 }
 
-/* NOTE: explicitly set here to override the default mozdev styles when viewing
- * the help page at vimperator.mozdev.org */
-li {
-    list-style-image: none;
-    list-style-position: outside;
-    list-style-type: disc;
-}
-
 .argument {
     color: #6A97D4;
 }