[ISSUE#3983] Duplicated warn log in class DefaultMQProducerImpl is unnecessary.

[XiaoyiPeng]

Make sure set the target branch to develop

What is the purpose of the change

For #3983

Brief changelog

Remove duplicated warn log in class DefaultMQProducerImpl.

Verifying this change

XXXX

[codecov-commenter]

Codecov Report

Merging #3984 (bed2b3c) into develop (40d9505) will increase coverage by 0.02%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #3984      +/-   ##
=============================================
+ Coverage      47.68%   47.71%   +0.02%     
  Complexity      4972     4972              
=============================================
  Files            633      633              
  Lines          42579    42577       -2     
  Branches        5589     5589              
=============================================
+ Hits           20305    20315      +10     
+ Misses         19764    19754      -10     
+ Partials        2510     2508       -2     

Impacted Files	Coverage Δ
...mq/client/impl/producer/DefaultMQProducerImpl.java	45.59% <ø> (+0.48%)	⬆️
...ache/rocketmq/common/stats/MomentStatsItemSet.java	39.13% <0.00%> (-4.35%)	⬇️
...a/org/apache/rocketmq/filter/util/BloomFilter.java	59.13% <0.00%> (-2.16%)	⬇️
...a/org/apache/rocketmq/store/StoreStatsService.java	36.97% <0.00%> (-0.57%)	⬇️
...ent/impl/consumer/DefaultLitePullConsumerImpl.java	68.79% <0.00%> (-0.52%)	⬇️
...ain/java/org/apache/rocketmq/store/MappedFile.java	51.40% <0.00%> (-0.36%)	⬇️
...etmq/client/latency/LatencyFaultToleranceImpl.java	50.00% <0.00%> (ø)
...in/java/org/apache/rocketmq/test/util/MQAdmin.java	44.44% <0.00%> (+5.55%)	⬆️
...org/apache/rocketmq/common/stats/StatsItemSet.java	52.23% <0.00%> (+8.95%)	⬆️

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[coveralls]

Coverage increased (+0.08%) to 51.77% when pulling bed2b3c on XiaoyiPeng:fix_duplicated_warn_log into 895bd95 on apache:develop.

[coveralls]

Coverage increased (+0.08%) to 51.77% when pulling bed2b3c on XiaoyiPeng:fix_duplicated_warn_log into 895bd95 on apache:develop.