[#noissue] Polishing: remove unused comparator

[intr3p1d]

No description provided.

[codecov]

Codecov Report

Merging #9284 (db4acb6) into master (0576c69) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #9284      +/-   ##
============================================
- Coverage     39.59%   39.57%   -0.03%     
+ Complexity    11831    11829       -2     
============================================
  Files          3409     3409              
  Lines         91565    91577      +12     
  Branches      10160    10162       +2     
============================================
- Hits          36258    36242      -16     
- Misses        52206    52232      +26     
- Partials       3101     3103       +2     

Impacted Files	Coverage Δ
...vercorp/pinpoint/common/server/bo/AgentInfoBo.java	0.00% <0.00%> (ø)
...vercorp/pinpoint/rpc/packet/ServerClosePacket.java	47.82% <0.00%> (-17.40%)	⬇️
...m/navercorp/pinpoint/rpc/client/ConnectFuture.java	70.83% <0.00%> (-8.34%)	⬇️
...vercorp/pinpoint/rpc/packet/ClientClosePacket.java	46.66% <0.00%> (-6.67%)	⬇️
...rp/pinpoint/rpc/server/PinpointServerAcceptor.java	84.10% <0.00%> (-4.64%)	⬇️
...rc/main/java/com/navercorp/pinpoint/test/Item.java	64.81% <0.00%> (-3.71%)	⬇️
...orp/pinpoint/rpc/server/DefaultPinpointServer.java	79.83% <0.00%> (-1.24%)	⬇️
...etric/web/service/SystemMetricDataServiceImpl.java	0.00% <0.00%> (ø)
...c/web/service/SystemMetricHostInfoServiceImpl.java	0.00% <0.00%> (ø)
...pinpoint/profiler/monitor/DeadlockMonitorTask.java	21.59% <0.00%> (+1.13%)	⬆️
... and 2 more

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