Potential fix for pull request finding 'Unreachable code'

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

Author: ChenZiHong-Gavin

graphgen/engine.py

@@ -119,8 +119,6 @@ def _filter_kwargs(
             for k, v in func_params.items():
                 if k in valid_keys or has_var_keywords:
                     final_kwargs[k] = v
-                elif has_var_keywords:
-                    final_kwargs[k] = v
             return final_kwargs
 
         if node.op_name not in self.functions: