fish: bd: Remove homebrew-py-libs.txt

Homebrew Python and its Python packages are dependencies for
applications installed via `brew`. They are not for development.

• https://justinmayer.com/posts/homebrew-python-is-not-for-you
  ↳ Homebrew Python Is Not For You
• Homebrew/homebrew-core#157500
  ↳ [rfc] Homebrew packaging for python resources
• Homebrew/homebrew-core#167905
  ↳ Tracking issue for cleaning up python lib formulae

Author: serban

Diff for: fish/functions/bd.fish

@@ -5,7 +5,7 @@ function bd
     return
   end
 
-  set --local packages (cat ~/src/dotfiles/packages/homebrew-{core,dev,fun,media,py-libs,py-repls,py-tools}.txt)
+  set --local packages (cat ~/src/dotfiles/packages/homebrew-{core,dev,fun,media,py-repls,py-tools}.txt)
   set --local output_dir (gmktemp --directory --tmpdir 'bd.XXXXXX')
 
   set --local expected          '1-expected.txt'