chore: remove unnecessary #[allow(clippy::inline_always)]

[DaniPopes]

It's allowed at the crate scope.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (480da03) 80.64% compared to head (ee79027) 80.64%.
Report is 1 commits behind head on main.

❗ Current head ee79027 differs from pull request most recent head ecbdc18. Consider uploading reports for the commit ecbdc18 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #321   +/-   ##
=======================================
  Coverage   80.64%   80.64%           
=======================================
  Files          54       54           
  Lines        6045     6045           
=======================================
  Hits         4875     4875           
  Misses       1170     1170           

Files	Coverage Δ
src/add.rs	74.10% <ø> (ø)
src/bit_arr.rs	21.35% <ø> (ø)
src/bits.rs	78.06% <ø> (+0.23%)	⬆️
src/macros.rs	33.33% <ø> (ø)
src/mul.rs	90.79% <ø> (ø)

... and 1 file with indirect coverage changes

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