Stop bump krew for release-1.10

[RainbowMango]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:

Stop krew update on branch release-1.10, see #4703 for more details.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:
Thanks to @liangyuanpeng for his excellent effort on #5224. We don't need to do the same thing on release 1.11 and the following release, either.

Does this PR introduce a user-facing change?:

NONE

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.68%. Comparing base (eeff8c3) to head (c51f730).

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Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.10    #5764   +/-   ##
=============================================
  Coverage         51.67%   51.68%           
=============================================
  Files               258      258           
  Lines             25707    25707           
=============================================
+ Hits              13285    13286    +1     
+ Misses            11686    11685    -1     
  Partials            736      736           

Flag	Coverage Δ
unittests	51.68% <ø> (+<0.01%)	⬆️

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[RainbowMango]

/assign @liangyuanpeng

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