Fix black formatting and ruff linting

Author: 1bcMax

blockrun_llm/client.py

@@ -1269,5 +1269,3 @@ async def async_testnet_client(private_key: Optional[str] = None, **kwargs) -> A
         api_url=AsyncLLMClient.TESTNET_API_URL,
         **kwargs,
     )
-
-

blockrun_llm/router.py

@@ -16,7 +16,7 @@
 
 import re
 import math
-from typing import Dict, List, Optional, Literal, TypedDict, Any
+from typing import Dict, List, Optional, Literal, TypedDict
 
 
 # Type definitions