Retired fixRmSmallIncreasedQOffers amendment

[pratikmankawde]

High Level Overview of Change

This change retires the fixRmSmallIncreasedQOffers amendment.

Context of Change

Amendments activated for more than 2 years can be retired.
https://xrpl.org/resources/known-amendments#fixRmSmallIncreasedQOffers

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (non-breaking change that only restructures code)
• Performance (increase or change in throughput and/or latency)
• Tests (you added tests for code that already exists, or your new feature included in this PR)
• Documentation update
• Chore (no impact to binary, e.g. .gitignore, formatting, dropping support for older tooling)
• Release

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.3%. Comparing base (48d38c1) to head (eee8ec5).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #5955     +/-   ##
=========================================
- Coverage     78.3%   78.3%   -0.0%     
=========================================
  Files          817     817             
  Lines        68965   68963      -2     
  Branches      8302    8307      +5     
=========================================
- Hits         54020   54006     -14     
- Misses       14945   14957     +12     

Files with missing lines	Coverage Δ
src/xrpld/app/tx/detail/OfferStream.cpp	75.2% <ø> (-0.3%)	⬇️

... and 4 files with indirect coverage changes

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[a1q123456]

LGTM 👍