deps: move rimraf to dependencies

package.json

@@ -25,6 +25,7 @@
     "@nestjs/websockets": "^5.1.0",
     "@types/node": "^10.7.1",
     "reflect-metadata": "^0.1.12",
+    "rimraf": "^2.6.2",
     "rxjs": "^6.2.2"
   },
   "devDependencies": {
@@ -34,7 +35,6 @@
     "jest": "^23.5.0",
     "nodemon": "^1.18.3",
     "prettier": "^1.14.2",
-    "rimraf": "^2.6.2",
     "supertest": "^3.1.0",
     "ts-jest": "^23.1.3",
     "ts-loader": "^4.4.2",