Remove assignment to unused variable

Author: MarcoGorelli

pandas/tests/io/parser/test_header.py

@@ -50,7 +50,7 @@ def test_negative_header(all_parsers):
         match="Passing -1 to header is invalid. "
         "For no header, use header=None instead",
     ):
-        result = parser.read_csv(StringIO(data), header=-1)
+        parser.read_csv(StringIO(data), header=-1)
 
 
 def test_no_header_prefix(all_parsers):