Remove OtioView from OTIO-Core

[apetrynet]

Fixes #1809
ASWF DevDay contribution

Summarize your change.

As Raven has surpassed OTIOView in most ways and we have few resources to maintain the old code base ,OTIOView is getting its own repository under the OpenTimelineIO organization. There it will hopefully attract enthusiastic contributors who can maintain it.

Reference associated tests.

No tests existed, so non have been updated

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.00%. Comparing base (c0e97b0) to head (1e225e4).
⚠️ Report is 74 commits behind head on main.

❌ Your changes status has failed because you have indirect coverage changes. Learn more about Unexpected Coverage Changes and reasons for indirect coverage changes.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1944      +/-   ##
==========================================
+ Coverage   84.11%   85.00%   +0.88%     
==========================================
  Files         198      181      -17     
  Lines       22241    13074    -9167     
  Branches     4687     1206    -3481     
==========================================
- Hits        18709    11113    -7596     
+ Misses       2610     1778     -832     
+ Partials      922      183     -739     

Flag	Coverage Δ
py-unittests	85.00% <ø> (+0.88%)	⬆️

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see 140 files with indirect coverage changes

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