fix: chat instrument (#975)

Author: wenytang-ms

package.json

@@ -14,7 +14,6 @@
   "engines": {
     "vscode": "^1.95.0"
   },
-  "enabledApiProposals": ["chatPromptFiles"],
   "repository": {
     "type": "git",
     "url": "https://github.com/Microsoft/vscode-java-dependency.git"