Dropped old polyfill code

[christianlupus]

Topic and Scope

This is a maintenance to remove an old polyfill code for NC20.

Concerns/issues

None

Formal requirements

There are some formal requirements that should be satisfied. Please mark those by checking the corresponding box.

• I did check that the app can still be opened and does not throw any browser logs
• I created tests for newly added PHP code (check this if no PHP changes were made)
• I updated the OpenAPI specs and added an entry to the API changelog (check if API was not modified)
• I notified the matrix channel if I introduced an API change

[christianlupus]

/approve

[codecov]

Codecov Report

Merging #1843 (b4d935b) into master (4920340) will decrease coverage by 0.13%.
The diff coverage is 0.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1843      +/-   ##
==========================================
- Coverage   79.67%   79.54%   -0.13%     
==========================================
  Files          89       89              
  Lines        2573     2577       +4     
==========================================
  Hits         2050     2050              
- Misses        523      527       +4     

Flag	Coverage Δ
integration	21.84% <0.00%> (-0.04%)	⬇️
migration	5.85% <0.00%> (-0.01%)	⬇️
unittests	55.91% <0.00%> (-0.09%)	⬇️

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

Files	Coverage Δ
lib/Search/Provider.php	0.00% <0.00%> (ø)

[christianlupus]

/approve

[nextcloud-cookbook-bot]

Automatically approved by GitHub action on behalf of /approve