Deprecate c++ demangling.

[furby-tm]

Summarize your change.

Remove the C++ demangling.

• Removes the include for <cxxabi.h>
• Removes any demangling logic that utilized that header.

Reference associated tests.

All tests pass.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.62%. Comparing base (c0e97b0) to head (77aacef).
Report is 24 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1800      +/-   ##
==========================================
- Coverage   84.11%   81.62%   -2.50%     
==========================================
  Files         198      176      -22     
  Lines       22241    12345    -9896     
  Branches     4687     3033    -1654     
==========================================
- Hits        18709    10077    -8632     
+ Misses       2610     1728     -882     
+ Partials      922      540     -382     

Flag	Coverage Δ
py-unittests	81.62% <ø> (-2.50%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/opentimelineio/stringUtils.cpp	36.36% <ø> (-8.09%)	⬇️

... and 69 files with indirect coverage changes

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[meshula]

Thanks, this removal is welcome.