Cleanup styles, leave only Standard and Plural

[alganet]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 88.88889% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.41%. Comparing base (a08a702) to head (0d97b68).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Styles/Plural.php	88.88%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master      #31      +/-   ##
============================================
- Coverage     98.96%   98.41%   -0.55%     
+ Complexity      237      216      -21     
============================================
  Files            13       10       -3     
  Lines           481      441      -40     
============================================
- Hits            476      434      -42     
- Misses            5        7       +2     

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