feat: more deprecated things to remove

[caarlos0]

removed more deprecated things...

my plan is to roll it in v2.1 (because I forgot about it in v2.0)

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[djgilcrease]

Good to go

[codecov]

Codecov Report

Merging #269 (831a3b8) into master (bd5888e) will increase coverage by 0.37%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #269      +/-   ##
==========================================
+ Coverage   69.44%   69.82%   +0.37%     
==========================================
  Files           9        9              
  Lines        1103     1097       -6     
==========================================
  Hits          766      766              
+ Misses        209      205       -4     
+ Partials      128      126       -2     

Impacted Files	Coverage Δ
nfpm.go	84.78% <ø> (+5.19%)	⬆️

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[github-actions]

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