Speed up language_test

Old hack no longer appears to be necessary

package.json

@@ -55,7 +55,7 @@
         "c9"
     ],
     "c9plugins": {
-        "c9.ide.language": "#19d7fdfc47",
+        "c9.ide.language": "#83321ede12",
         "c9.ide.language.css": "#36150db526",
         "c9.ide.language.generic": "#365368d108",
         "c9.ide.language.html": "#e7b5ab7ff8",