github-issues: remove dependency on prettier

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/github-issues/package.json

@@ -21,7 +21,6 @@
     "prepack": "backstage-cli package prepack",
     "postpack": "backstage-cli package postpack"
   },
-  "prettier": "@spotify/prettier-config",
   "dependencies": {
     "@backstage/catalog-model": "^1.0.3",
     "@backstage/core-components": "^0.11.0-next.2",
@@ -44,7 +43,6 @@
     "@backstage/core-app-api": "^1.0.5-next.0",
     "@backstage/dev-utils": "^1.0.5-next.1",
     "@backstage/test-utils": "^1.1.3-next.0",
-    "@spotify/prettier-config": "^14.0.0",
     "@testing-library/jest-dom": "^5.10.1",
     "@testing-library/react": "^12.1.3",
     "@testing-library/user-event": "^14.0.0",
@@ -52,8 +50,7 @@
     "@types/node": "*",
     "@types/react": "^16.13.1 || ^17.0.0",
     "cross-fetch": "^3.1.5",
-    "msw": "^0.44.0",
-    "prettier": "^2.7.1"
+    "msw": "^0.44.0"
   },
   "files": [
     "dist"