Replace create_vector_search_index

Remove create_vector_search_index from langchain-mongodb and import from
pymongo-search-utils.

Author: aclark4life

libs/langchain-mongodb/pyproject.toml

@@ -65,11 +65,11 @@ filterwarnings = [
 
 [tool.mypy]
 disallow_untyped_defs = true
+disable_error_code = ["import-untyped"]
 
 [[tool.mypy.overrides]]
-module = [ "langchain_mongodb.*", "tests.*"]
+module = ["tests.*"]
 disable_error_code = ["no-untyped-def", "no-untyped-call", "var-annotated"]
-follow_untyped_imports = true
 
 [tool.ruff]
 lint.select = [