Revert "Update plots before scraping"

[banesullivan]

Reverts #5283

cc @alexrockhill and @tkoyama010

[banesullivan]

I'm reverting this commit as it incorrectly modified our CI routines by setting up graphics capabilities in a test environment specifically for validating that PyVista's core tests will work without graphics. Further this PR added Qt dependencies which we have a policy of not including in PyVista -- anything Qt-specific should be tested in pyvistaqt: https://github.com/pyvista/pyvistaqt

[codecov]

Codecov Report

Merging #5310 (cb9d0d3) into main (f96feb4) will decrease coverage by 0.07%.
The diff coverage is 66.66%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5310      +/-   ##
==========================================
- Coverage   96.27%   96.20%   -0.07%     
==========================================
  Files         134      134              
  Lines       22700    22712      +12     
==========================================
- Hits        21854    21850       -4     
- Misses        846      862      +16     

[github-actions]

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