[PP-1914] Remove collection facet from feed.

[dbernstein]

Description

This update removes the Collection Facet and all related artifacts from the code base.

Motivation and Context

https://ebce-lyrasis.atlassian.net/browse/PP-1914

How Has This Been Tested?

Unit tests have been updated.

Checklist

• I have updated the documentation accordingly.
• All new and existing tests passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.01%. Comparing base (1d1b4eb) to head (f833605).
Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2182   +/-   ##
=======================================
  Coverage   91.01%   91.01%           
=======================================
  Files         361      361           
  Lines       41205    41172   -33     
  Branches     8849     8840    -9     
=======================================
- Hits        37504    37474   -30     
+ Misses       2425     2424    -1     
+ Partials     1276     1274    -2     

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

[jonathangreen]

This looks good!

We also need a follow up PR for this, that will go into the release after this one to clean the old settings out of our existing library configurations. They won't cause any issues, but its good to clean them out of the json field before we forget about them.