Fixing levelization.sh script to ignore commented out includes

[vlntb]

High Level Overview of Change

Issue raised in: https://github.com/XRPLF/rippled/issues/5193

Context of Change

Added simple check to ignore single-line comments during dependency analysis.

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
• [x] Chore (no impact to binary, e.g. .gitignore, formatting, dropping support for older tooling)
• [ ] Release

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.0%. Comparing base (9e4a7d5) to head (b6723b3). Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #5194   +/-   ##
=======================================
  Coverage     78.0%   78.0%           
=======================================
  Files          789     789           
  Lines        66955   66955           
  Branches      8110    8108    -2     
=======================================
+ Hits         52215   52219    +4     
+ Misses       14740   14736    -4     

see 4 files with indirect coverage changes

[ximinez]

@vlntb Is this ready to merge? If so, please provide a good commit message to use on the merge.