Removed unnecessary mongo connection string.

api/subscriptions.js

@@ -2,13 +2,8 @@ const express = require("express");
 const path = require("path");
 const router = express.Router();
 const webpush = require("web-push"); //requiring the web-push module
-const mongoose = require("mongoose");
 const schedule = require("node-schedule");
 
-mongoose.connect("mongodb://localhost:27017/vinlottis", {
-  useNewUrlParser: true
-});
-
 const mustBeAuthenticated = require(path.join(
   __dirname + "/../middleware/mustBeAuthenticated"
 ));