[ISSUE #5969] Remvoe duplicate deleteUnusedStats in admin processor

[zhiliatom]

Make sure set the target branch to develop

What is the purpose of the change

fix #5969

Brief changelog

XX

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

Merging #5973 (4c07108) into develop (ff8c4c8) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #5973      +/-   ##
=============================================
- Coverage      43.40%   43.38%   -0.02%     
- Complexity      8826     8828       +2     
=============================================
  Files           1090     1090              
  Lines          76608    76607       -1     
  Branches       10003    10002       -1     
=============================================
- Hits           33248    33238      -10     
- Misses         39197    39216      +19     
+ Partials        4163     4153      -10     

Impacted Files	Coverage Δ
...ocketmq/broker/processor/AdminBrokerProcessor.java	25.31% <ø> (+0.08%)	⬆️
...apache/rocketmq/broker/longpolling/PopRequest.java	31.03% <0.00%> (-13.80%)	⬇️
...tmq/remoting/protocol/body/ConsumerConnection.java	95.83% <0.00%> (-4.17%)	⬇️
...e/rocketmq/store/ha/autoswitch/EpochFileCache.java	77.08% <0.00%> (-1.39%)	⬇️
.../apache/rocketmq/store/ha/DefaultHAConnection.java	65.86% <0.00%> (-1.21%)	⬇️
...cketmq/broker/schedule/ScheduleMessageService.java	56.91% <0.00%> (-1.14%)	⬇️
...ent/impl/consumer/DefaultLitePullConsumerImpl.java	67.65% <0.00%> (-1.10%)	⬇️
...he/rocketmq/client/impl/consumer/ProcessQueue.java	59.91% <0.00%> (-0.89%)	⬇️
...rocketmq/client/impl/factory/MQClientInstance.java	47.41% <0.00%> (-0.60%)	⬇️
...ava/org/apache/rocketmq/filter/util/BitsArray.java	59.82% <0.00%> (ø)
... and 8 more

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