refactor: delete unused launcher

[ndr-brt]

What this PR changes/adds

delete data-plane-server, as it's not really used and it's not clear what it's supposed to achieve.

Why it does that

cleanup

Further notes

List other areas of code that have changed but are not necessarily linked to the main feature. This could be method
signature changes, package declarations, bugs that were encountered and were fixed inline, etc.

Linked Issue(s)

Closes #4198

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.02%. Comparing base (7f20ba5) to head (3a90884).
Report is 265 commits behind head on main.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4199      +/-   ##
==========================================
+ Coverage   71.74%   75.02%   +3.27%     
==========================================
  Files         919     1015      +96     
  Lines       18457    20656    +2199     
  Branches     1037     1165     +128     
==========================================
+ Hits        13242    15497    +2255     
+ Misses       4756     4649     -107     
- Partials      459      510      +51     

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