Revert "Adding more logs in netty requests (#3196)"

[justinlin-linkedin]

Summary

This reverts commit 895372b.
And remove verbose loggings in netty requests and responses.

Testing Done

Unit test

[codecov-commenter]

Codecov Report

❌ Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 69.78%. Comparing base (52ba813) to head (39fd034).
⚠️ Report is 347 commits behind head on master.

Files with missing lines	Patch %	Lines
...a/com/github/ambry/rest/NettyMessageProcessor.java	40.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3203      +/-   ##
============================================
+ Coverage     64.24%   69.78%   +5.54%     
- Complexity    10398    12809    +2411     
============================================
  Files           840      930      +90     
  Lines         71755    79086    +7331     
  Branches       8611     9459     +848     
============================================
+ Hits          46099    55194    +9095     
+ Misses        23004    20943    -2061     
- Partials       2652     2949     +297     

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