fix: remove unused @ai-sdk/google from root package.json

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: FL4TLiN3

bun.lock

@@ -42,8 +42,5 @@
   "engines": {
     "bun": ">=1.2.0"
   },
-  "packageManager": "bun@1.3.5",
-  "dependencies": {
-    "@ai-sdk/google": "^3.0.51"
-  }
+  "packageManager": "bun@1.3.5"
 }