[HUDI-4843] Delete the useless timer in BaseRollbackActionExecutor (#6671)

Co-authored-by: 吴文池 <wuwenchi@deepexi.com>

Author: wuwenchi

hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/rollback/BaseRollbackActionExecutor.java

@@ -100,8 +100,6 @@ public BaseRollbackActionExecutor(HoodieEngineContext context,
   private HoodieRollbackMetadata runRollback(HoodieTable<T, I, K, O> table, HoodieInstant rollbackInstant, HoodieRollbackPlan rollbackPlan) {
     ValidationUtils.checkArgument(rollbackInstant.getState().equals(HoodieInstant.State.REQUESTED)
         || rollbackInstant.getState().equals(HoodieInstant.State.INFLIGHT));
-    final HoodieTimer timer = new HoodieTimer();
-    timer.startTimer();
     final HoodieInstant inflightInstant = rollbackInstant.isRequested()
         ? table.getActiveTimeline().transitionRollbackRequestedToInflight(rollbackInstant)
         : rollbackInstant;