fix(vector_io): remove unused TypeAdapter import after load_models removal

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Ian Miller <milleryan2003@gmail.com>

Author: r3v5

src/ogx/providers/remote/vector_io/pgvector/pgvector.py

@@ -13,7 +13,7 @@
 import asyncpg
 from numpy.typing import NDArray
 from pgvector.asyncpg import register_vector
-from pydantic import BaseModel, TypeAdapter
+from pydantic import BaseModel
 
 from ogx.core.storage.kvstore import kvstore_impl
 from ogx.log import get_logger