[refactor] Remove debug action since it is never used. (#10484)

Co-authored-by: yiguolei <yiguolei@gmail.com>

be/src/exec/assert_num_rows_node.cpp

@@ -57,7 +57,6 @@ Status AssertNumRowsNode::open(RuntimeState* state) {
 }
 
 Status AssertNumRowsNode::get_next(RuntimeState* state, RowBatch* output_batch, bool* eos) {
-    RETURN_IF_ERROR(exec_debug_action(TExecNodePhase::GETNEXT));
     SCOPED_TIMER(_runtime_profile->total_time_counter());
     SCOPED_SWITCH_TASK_THREAD_LOCAL_EXISTED_MEM_TRACKER(mem_tracker());
     output_batch->reset();