fix: Remove invalid peer dependency

Author: jsonbailey

packages/ai-providers/server-ai-langchain/package.json

@@ -48,7 +48,6 @@
   },
   "peerDependencies": {
     "@langchain/core": "^0.2.0 || ^0.3.0",
-    "@launchdarkly/server-sdk-ai": "^0.14.0",
-    "langchain": "^0.2.0 || ^0.3.0"
+    "@launchdarkly/server-sdk-ai": "^0.14.0"
   }
 }