revert package

package.json

@@ -18,8 +18,7 @@
     "moment": "latest",
     "request": "latest",
     "underscore": "latest",
-    "underscore.string": "latest",
-    "ws": "^5.2.0"
+    "underscore.string": "latest"
   },
   "license": "AGPL-3.0",
   "scripts": {