Uninstall ts-protoc-gen dependency

Author: robertbrignull

extensions/ql-vscode/package-lock.json

@@ -1872,7 +1872,6 @@
     "ts-json-schema-generator": "^1.1.2",
     "ts-loader": "^9.4.2",
     "ts-node": "^10.7.0",
-    "ts-protoc-gen": "^0.9.0",
     "ts-unused-exports": "^9.0.5",
     "typescript": "^5.0.2",
     "webpack": "^5.76.0",