Update prebuilt_langchain_agent_template.py

Author: dishaprakash

samples/langchain_on_vertexai/prebuilt_langchain_agent_template.py

@@ -91,7 +91,7 @@ def similarity_search(query: str) -> list[Document]:
 DISPLAY_NAME = os.getenv("DISPLAY_NAME") or "PrebuiltAgent"
 
 remote_app = reasoning_engines.ReasoningEngine.create(
-    reasoning_engines.LangchainAgent(
+    reasoning_engines.LangchainAgent(  # type: ignore[arg-type]
         model="gemini-2.0-flash-001",
         tools=[similarity_search],  # type: ignore[list-item]
         model_kwargs={
@@ -102,6 +102,6 @@ def similarity_search(query: str) -> list[Document]:
     display_name=DISPLAY_NAME,
     sys_version="3.11",
     extra_packages=["config.py"],
-)  # type: ignore[arg-type]
+)
 
 print(remote_app.query(input="movies about engineers"))  # type: ignore[attr-defined]