Remove filtering display type from core

[cmdcolin]

Fixes #2209 by removing the filtering plugin from core

We could try to maintain this plugin but I think it may be better to remove from core for now

[codecov]

Codecov Report

Merging #2232 (18f93f7) into main (f33c9e7) will increase coverage by 0.20%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2232      +/-   ##
==========================================
+ Coverage   62.93%   63.14%   +0.20%     
==========================================
  Files         484      479       -5     
  Lines       22720    22616     -104     
  Branches     5154     5143      -11     
==========================================
- Hits        14298    14280      -18     
+ Misses       8152     8072      -80     
+ Partials      270      264       -6     

Impacted Files	Coverage Δ
products/jbrowse-desktop/src/corePlugins.ts	100.00% <ø> (ø)
products/jbrowse-web/src/corePlugins.ts	100.00% <ø> (ø)
packages/core/util/io/rangeFetcher.ts	90.24% <0.00%> (-2.44%)	⬇️
packages/core/assemblyManager/assemblyManager.ts	60.00% <0.00%> (-1.43%)	⬇️

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