Fix: Remove local json import that was causing variable scope issues

handler.py

@@ -52,7 +52,6 @@ class EndpointHandler:
             if isinstance(inputs, str):
                 # Check if it's a JSON string
                 try:
-                    import json
                     parsed_inputs = json.loads(inputs)
                     if isinstance(parsed_inputs, dict):
                         inputs = parsed_inputs