Remove duplicate line

Author: gramalingam

onnxscript/analysis.py

@@ -80,8 +80,6 @@ def assigned_in_block(block: Sequence[ast.stmt]) -> Set[str]:
         return set()
     if ast_utils.is_print_call(stmt):
         return set()
-    if isinstance(stmt, list):
-        return assigned_in_block(stmt)
     raise ValueError(f"Unsupported statement type {type(stmt)!r}.")