🌱 Remove unnecessary random seed initialization.

[xuezhaojun]

Summary

This PR removes explicit calls to rand.Seed(time.Now().UTC().UnixNano()) from multiple command entry points. As of Go 1.20, explicit seeding is unnecessary since the package is auto-initialized. This change removes the now-deprecated code and associated imports, cleaning up our codebase.

Go 1.20 no longer requires developers to manually seed the random number generator for typical operations. Removing these calls:

• Eliminates deprecation warnings.
• Simplifies the main functions.
• Reduces unnecessary code.
  If deterministic random sequences are needed (for testing, for example), consider using rand.New(rand.NewSource(seed)) to initialize a local generator.

[xuezhaojun]

/assign @qiujian16

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.82%. Comparing base (b6c2a84) to head (88067f5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #820   +/-   ##
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  Coverage   63.82%   63.82%           
=======================================
  Files         193      193           
  Lines       18667    18667           
=======================================
  Hits        11914    11914           
  Misses       5772     5772           
  Partials      981      981           

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[qiujian16]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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