enhance: remove compaction parallelism control (#39081)

[czs007]

issue : #39080
pr : #39081

[sre-ci-robot]

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• configs/OWNERS [czs007]
• internal/datacoord/OWNERS [czs007]
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[mergify]

@czs007 go-sdk check failed, comment rerun go-sdk can trigger the job again.

[czs007]

rerun go-sdk

[mergify]

@czs007 go-sdk check failed, comment rerun go-sdk can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 86.88525% with 8 lines in your changes missing coverage. Please review.

Project coverage is 80.99%. Comparing base (8475d8b) to head (e7211d6).

Files with missing lines	Patch %	Lines
internal/datacoord/compaction.go	86.44%	6 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.5   #39487      +/-   ##
==========================================
- Coverage   80.99%   80.99%   -0.01%     
==========================================
  Files        1404     1404              
  Lines      197899   197876      -23     
==========================================
- Hits       160296   160262      -34     
- Misses      31980    31984       +4     
- Partials     5623     5630       +7     

Components	Coverage Δ
Client	78.26% <ø> (ø)
Core	69.47% <ø> (ø)
Go	82.95% <86.88%> (-0.02%)	⬇️

Files with missing lines	Coverage Δ
pkg/util/paramtable/component_param.go	98.40% <100.00%> (+<0.01%)	⬆️
internal/datacoord/compaction.go	72.57% <86.44%> (+1.47%)	⬆️

... and 36 files with indirect coverage changes