chore: remove un-used code

[baurine]

Remove the un-used tidb-dashboard-for-dbaas package

[netlify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f3ac98a) 24.04% compared to head (2327004) 24.03%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1638      +/-   ##
==========================================
- Coverage   24.04%   24.03%   -0.02%     
==========================================
  Files         173      173              
  Lines       15679    15679              
==========================================
- Hits         3770     3768       -2     
- Misses      11626    11628       +2     
  Partials      283      283              

Flag	Coverage Δ
backend_integration	9.06% <ø> (+0.03%)	⬆️
backend_ut	26.26% <ø> (-0.02%)	⬇️

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[shhdgit]

lgtm.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: shhdgit

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-01-08 10:21:15.662848746 +0000 UTC m=+265865.247102418: ☑️ agreed by shhdgit.