remove some unused deps

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

plugins/api-docs/package.json

@@ -39,7 +39,6 @@
     "@backstage/core-plugin-api": "workspace:^",
     "@backstage/plugin-catalog": "workspace:^",
     "@backstage/plugin-catalog-react": "workspace:^",
-    "@backstage/theme": "workspace:^",
     "@graphiql/react": "^0.20.0",
     "@material-ui/core": "^4.12.2",
     "@material-ui/icons": "^4.9.1",
@@ -67,9 +66,7 @@
     "@testing-library/jest-dom": "^6.0.0",
     "@testing-library/react": "^14.0.0",
     "@testing-library/user-event": "^14.0.0",
-    "@types/swagger-ui-react": "^4.18.0",
-    "cross-fetch": "^4.0.0",
-    "msw": "^1.0.0"
+    "@types/swagger-ui-react": "^4.18.0"
   },
   "files": [
     "dist"