PMM-13748 drop gssapi support

[idoqo]

PMM-13748

Link to the Feature Build: SUBMODULES-3919

• PMM-13959 remove GSSAPI from main builds mongodb_exporter#1083

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.70%. Comparing base (539320f) to head (cd4f50b).
Report is 1 commits behind head on v3.

Additional details and impacted files

@@           Coverage Diff           @@
##               v3    #4001   +/-   ##
=======================================
  Coverage   43.70%   43.70%           
=======================================
  Files         369      369           
  Lines       45213    45213           
=======================================
+ Hits        19760    19762    +2     
+ Misses      23743    23739    -4     
- Partials     1710     1712    +2     

Flag	Coverage Δ
admin	11.49% <ø> (+0.04%)	⬆️
agent	52.73% <ø> (ø)
managed	45.06% <ø> (ø)
vmproxy	73.45% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.