Removing more dependencies

package.json

@@ -33,13 +33,10 @@
     "express": "^4.15.5",
     "express-basic-auth": "^1.1.3",
     "express-rate-limit": "^2.11.0",
-    "gulp-json-modify": "^1.0.2",
-    "gulp-merge-json": "^1.3.1",
     "helmet": "^3.12.1",
     "level": "^4.0.0",
     "mkdirp": "^0.5.1",
     "mocha": "^5.2.0",
-    "mongoose": "^4.10.5",
     "morgan": "^1.9.1",
     "mqtt": "^2.8.0",
     "passport": "^0.4.0",