🌱 remove deprecated work execution clusterrolebinding

[zhiweiyin318]

Summary

The open-cluster-management:{{ .KlusterletName }}-work:execution clusterRoleBinding has been deprecated for several releases, now remove the manifest and cleanup codes.

Related issue(s)

#985

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 64.20%. Comparing base (c9b3b6f) to head (7315ed8).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...usterletcontroller/klusterlet_managed_reconcile.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #992      +/-   ##
==========================================
- Coverage   64.22%   64.20%   -0.02%     
==========================================
  Files         195      195              
  Lines       19078    19078              
==========================================
- Hits        12252    12249       -3     
- Misses       5817     5819       +2     
- Partials     1009     1010       +1     

Flag	Coverage Δ
unit	64.20% <0.00%> (-0.02%)	⬇️

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[qiujian16]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiujian16, zhiweiyin318

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