DM-42226: Remove bin.src directory

[timj]

Requires lsst/sconsUtils#131

Checklist

• Ran Jenkins
• Added a release note for user-visible changes to docs/changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.88%. Comparing base (71dbc85) to head (b007a0a).
Report is 6 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #118   +/-   ##
=======================================
  Coverage   92.88%   92.88%           
=======================================
  Files          23       23           
  Lines        2880     2880           
  Branches      289      289           
=======================================
  Hits         2675     2675           
  Misses        118      118           
  Partials       87       87           

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