Remove fsHash from Revisions, don't do hash comparison checks

package.json

@@ -71,7 +71,7 @@
         "c9.ide.language.javascript.infer": "#69fbc134d6",
         "c9.ide.language.jsonalyzer": "#2b1878b731",
         "c9.ide.language.codeintel": "#fc867feec4",
-        "c9.ide.collab": "#799edb6836",
+        "c9.ide.collab": "#673d1aaf34",
         "c9.ide.local": "#10eb45842a",
         "c9.ide.find": "#e33fbaed2f",
         "c9.ide.find.infiles": "#bd34c29373",