executor: clean test code  (#35238)
executor: clean test code  (#35238)

ref pingcap/tidb#31716
pingcap/tidb,kyle-wang/tidb,ngaut/tidb,ngaut/tidb,pingcap/tidb,kyle-wang/tidb,pingcap/tidb,pingcap/tidb,kyle-wang/tidb,pingcap/tidb,kyle-wang/tidb,ngaut/tidb,kyle-wang/tidb,pingcap/tidb,ngaut/tidb,kyle-wang/tidb,ngaut/tidb,ngaut/tidb