Revert "Use a file socket"

This reverts commit 3bc1ff69d1.

File socket randombly breaks during setup

package.json

@@ -67,7 +67,7 @@
         "c9.ide.language.javascript.tern": "#8423d558f6",
         "c9.ide.language.javascript.infer": "#325ac6880e",
         "c9.ide.language.jsonalyzer": "#237a4456d5",
-        "c9.ide.language.codeintel": "#9253fa8d0f",
+        "c9.ide.language.codeintel": "#bb9814a4b2",
         "c9.ide.collab": "#a1a13c5943",
         "c9.ide.local": "#ded0db8949",
         "c9.ide.find": "#e33fbaed2f",