chore: remove the volume watcher and signal hander from config-manager

[leon-inf]

No description provided.

[apecloud-bot]

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[leon-inf]

/nopick

[codecov]

Codecov Report

❌ Patch coverage is 66.30435% with 31 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.86%. Comparing base (42f835b) to head (b85984c).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/parameters/configmanager/config_handler.go	69.49%	14 Missing and 4 partials ⚠️
pkg/parameters/configmanager/reload_util.go	44.44%	10 Missing ⚠️
pkg/parameters/configmanager/handler_util.go	77.77%	1 Missing and 1 partial ⚠️
pkg/parameters/config_util.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9856      +/-   ##
==========================================
- Coverage   50.95%   50.86%   -0.10%     
==========================================
  Files         546      542       -4     
  Lines       59183    58767     -416     
==========================================
- Hits        30159    29889     -270     
+ Misses      26050    25937     -113     
+ Partials     2974     2941      -33     

Flag	Coverage Δ
unittests	50.86% <66.30%> (-0.10%)	⬇️

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