removed all knip-reported backend-common usages

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/auth-node/knip-report.md

@@ -1,9 +1,2 @@
 # Knip report
 
-## Unused dependencies (2)
-
-| Name                      | Location     | Severity |
-| :------------------------ | :----------- | :------- |
-| @backstage/backend-common | package.json | error    |
-| winston                   | package.json | error    |
-

plugins/auth-node/package.json

@@ -37,7 +37,6 @@
     "test": "backstage-cli package test"
   },
   "dependencies": {
-    "@backstage/backend-common": "^0.25.0",
     "@backstage/backend-plugin-api": "workspace:^",
     "@backstage/catalog-client": "workspace:^",
     "@backstage/catalog-model": "workspace:^",
@@ -50,7 +49,6 @@
     "jose": "^5.0.0",
     "lodash": "^4.17.21",
     "passport": "^0.7.0",
-    "winston": "^3.2.1",
     "zod": "^3.22.4",
     "zod-to-json-schema": "^3.21.4",
     "zod-validation-error": "^3.4.0"