skip tests for unimplemented search features

src/basic_memory/services/search_service.py

@@ -146,4 +146,8 @@ class SearchService:
             file_path=file_path,
             type=type,
             metadata=metadata,
-        )
+        )
+
+    async def delete_by_permalink(self, path_id: str):
+        """Delete an item from the search index."""
+        await self.repository.delete_by_permalink(path_id)