Remove print_backend_namespace_{start,stop}.

[1uc]

The only backend specialized backend: acc, doesn't use this either.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.81%. Comparing base (92f176e) to head (e0293a7).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1378      +/-   ##
==========================================
- Coverage   86.82%   86.81%   -0.01%     
==========================================
  Files         179      180       +1     
  Lines       13690    13680      -10     
==========================================
- Hits        11886    11876      -10     
  Misses       1804     1804              

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[bbpbuildbot]

Logfiles from GitLab pipeline #224292 (:white_check_mark:) have been uploaded here!

Status and direct links:

• ✅ spack_setup
• ✅ build:intel
• ✅ build:nvhpc
• ✅ test:intel
• ✅ test:nvhpc

[1uc]

First PR in a sequence of 3.

[JCGoran]

Looking through the git history, I suppose we don't use/need this anymore.

[1uc]

Thanks for checking, I couldn't find anything either.