Remove prometheus depenedency from backend-common

packages/backend-common/package.json

@@ -41,7 +41,6 @@
     "cors": "^2.8.5",
     "cross-fetch": "^3.0.6",
     "express": "^4.17.1",
-    "express-prom-bundle": "^6.1.0",
     "express-promise-router": "^3.0.3",
     "fs-extra": "^9.0.1",
     "git-url-parse": "^11.4.0",
@@ -51,7 +50,6 @@
     "logform": "^2.1.1",
     "minimist": "^1.2.5",
     "morgan": "^1.10.0",
-    "prom-client": "^12.0.0",
     "selfsigned": "^1.10.7",
     "stoppable": "^1.1.0",
     "tar": "^6.0.5",