Potential fix for code scanning alert no. 6: Unused import

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: mukul975

postgres_server.py

@@ -7957,5 +7957,5 @@ async def PostgreSQL_parameter_sniffing_detection() -> str:
 
 # Main entry point - ensure server runs correctly
 if __name__ == "__main__":
-    import asyncio
+
     mcp.run(transport='stdio')