Remove dependencies from studio hook

package.json

@@ -31,11 +31,9 @@
   "dependencies": {
     "async": "~1.5.0",
     "consolidate": "~0.13.1",
-    "fs-extra": "~0.26.2",
     "grant-koa": "~3.5.3",
     "herd": "~1.0.0",
     "include-all": "~0.1.6",
-    "json-stringify-safe": "~5.0.1",
     "jsonapi-serializer": "seyz/jsonapi-serializer",
     "koa": "~1.1.2",
     "koa-bodyparser": "~2.0.1",
@@ -59,12 +57,8 @@
     "koa-static": "~1.5.2",
     "koa-views": "~3.1.0",
     "lodash": "~3.10.1",
-    "node-rsa": "~0.2.26",
     "node-schedule": "~0.6.0",
-    "request": "~2.67.0",
     "socket.io": "~1.3.7",
-    "socket.io-client": "~1.3.7",
-    "unzip2": "~0.2.5",
     "winston": "~2.1.1"
   },
   "devDependencies": {