remove unused diff dep

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

packages/cli/package.json

@@ -90,7 +90,6 @@
     "cross-spawn": "^7.0.3",
     "css-loader": "^6.5.1",
     "ctrlc-windows": "^2.1.0",
-    "diff": "^5.0.0",
     "esbuild": "^0.23.0",
     "esbuild-loader": "^4.0.0",
     "eslint": "^8.6.0",
@@ -169,7 +168,6 @@
     "@backstage/test-utils": "workspace:^",
     "@backstage/theme": "workspace:^",
     "@types/cross-spawn": "^6.0.2",
-    "@types/diff": "^5.0.0",
     "@types/ejs": "^3.1.3",
     "@types/express": "^4.17.6",
     "@types/fs-extra": "^11.0.0",