Removed some unneeded dependencies

package.json

@@ -30,7 +30,6 @@
     "cors": "^2.8.3",
     "debug": "~2.6.3",
     "dotenv": "^4.0.0",
-    "elasticsearch": "^13.0.1",
     "express": "^4.15.5",
     "express-basic-auth": "^1.1.3",
     "express-rate-limit": "^2.11.0",
@@ -49,12 +48,10 @@
     "passport-http": "^0.3.0",
     "pg": "^6.2.3",
     "pg-hstore": "^2.3.2",
-    "sequelize": "^3.30.4",
     "slp-sdk": "3.2.1",
     "slpjs": "0.15.5",
     "socket.io": "^2.1.1",
     "strftime": "^0.10.0",
-    "swagger-stats": "^0.95.6",
     "winston": "^3.2.1",
     "winston-daily-rotate-file": "^3.8.0",
     "zeromq": "^4.6.0"