Remove obsolete mode_completer

codeintel completer replaces it

package.json

@@ -58,7 +58,7 @@
     "c9plugins": {
         "c9.ide.language": "#68bb093a48",
         "c9.ide.language.css": "#be07d72209",
-        "c9.ide.language.generic": "#4eada42071",
+        "c9.ide.language.generic": "#92210f5a48",
         "c9.ide.language.html": "#22fdc74869",
         "c9.ide.language.html.diff": "#24f3608d26",
         "c9.ide.language.javascript": "#c6d102471f",

plugins/c9.static/build.js

@@ -252,7 +252,6 @@ function main(options, imports, register) {
                 "plugins/c9.ide.language/worker",
                 "plugins/c9.ide.language.generic/local_completer",
                 "plugins/c9.ide.language.generic/snippet_completer",
-                "plugins/c9.ide.language.generic/mode_completer",
                 "plugins/c9.ide.language.generic/open_files_local_completer",
                 "plugins/c9.ide.language.generic/simple/make",
                 "plugins/c9.ide.language.generic/simple/shell",