[BEAM-14059] Delete tags.go

[damccorm]

In release 2.38 we deprecated tags.go (see #17025). We should now remove it entirely

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[codecov]

Codecov Report

Merging #17541 (099ff63) into master (7312377) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #17541      +/-   ##
==========================================
+ Coverage   73.83%   73.85%   +0.02%     
==========================================
  Files         691      690       -1     
  Lines       91252    91224      -28     
==========================================
  Hits        67373    67373              
+ Misses      22647    22619      -28     
  Partials     1232     1232              

Flag	Coverage Δ
go	50.20% <ø> (+0.05%)	⬆️

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[jrmccluskey]

LGTM

[github-actions]

R: @youngoli for final approval

[damccorm]

@youngoli please don't merge this until after the 2.39 cut