[ISSUE #4332] Remove duplicate code

[coderbruis]

What is the purpose of the change

Remove duplicate code in Level#toLevel.

Brief changelog

Remove duplicate code in Level#toLevel.

[codecov-commenter]

Codecov Report

Merging #4331 (5704c0c) into develop (7982c9c) will increase coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             develop    #4331   +/-   ##
==========================================
  Coverage      48.19%   48.20%           
- Complexity      5085     5087    +2     
==========================================
  Files            642      642           
  Lines          42767    42765    -2     
  Branches        5598     5597    -1     
==========================================
+ Hits           20610    20613    +3     
+ Misses         19649    19643    -6     
- Partials        2508     2509    +1     

Impacted Files	Coverage Δ
.../java/org/apache/rocketmq/logging/inner/Level.java	39.58% <ø> (+1.58%)	⬆️
...rg/apache/rocketmq/common/stats/StatsSnapshot.java	84.61% <0.00%> (-15.39%)	⬇️
...org/apache/rocketmq/store/ha/WaitNotifyObject.java	66.07% <0.00%> (-10.72%)	⬇️
.../apache/rocketmq/common/stats/MomentStatsItem.java	38.09% <0.00%> (-9.53%)	⬇️
...in/java/org/apache/rocketmq/test/util/MQAdmin.java	38.88% <0.00%> (-5.56%)	⬇️
...ache/rocketmq/common/stats/MomentStatsItemSet.java	43.47% <0.00%> (-4.35%)	⬇️
...va/org/apache/rocketmq/common/stats/StatsItem.java	50.83% <0.00%> (-4.17%)	⬇️
...org/apache/rocketmq/common/stats/StatsItemSet.java	52.23% <0.00%> (-1.50%)	⬇️
...n/java/org/apache/rocketmq/store/ha/HAService.java	70.76% <0.00%> (-1.00%)	⬇️
...a/org/apache/rocketmq/store/StoreStatsService.java	36.97% <0.00%> (ø)
... and 8 more

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[coveralls]

Coverage decreased (-0.2%) to 52.052% when pulling 5704c0c on coderbruis:REMOVE_DUPLICATE_CODE into 7982c9c on apache:develop.

[coveralls]

Coverage decreased (-0.2%) to 52.052% when pulling 5704c0c on coderbruis:REMOVE_DUPLICATE_CODE into 7982c9c on apache:develop.