remove socket.io as a dependency

services/web/package.json

@@ -46,10 +46,8 @@
     "request": "2.34.0",
     "rimraf": "2.2.6",
     "sanitizer": "0.1.1",
-    "session.socket.io": "0.1.4",
     "settings-sharelatex": "git+https://github.com/sharelatex/settings-sharelatex.git#v1.0.0",
     "sixpack-client": "^1.0.0",
-    "socket.io": "0.9.16",
     "translations-sharelatex": "git+https://github.com/sharelatex/translations-sharelatex.git#master",
     "underscore": "1.6.0",
     "underscore.string": "^3.0.2",