feat!: remove deprecated platform blackberry

[erisu]

Platforms affected

n/a

Motivation, Context & Description

Remove deprecated/archived platform blackberry from coho. This platform no longer is supported and does not recieve updates.

Testing

n/a

Checklist

• [ ] I've run the tests to see all new and existing tests pass
• [ ] I added automated test coverage as appropriate for this change
• [ ] Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• [ ] If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• [ ] I've updated the documentation if necessary

[codecov-commenter]

Codecov Report

Merging #311 (c08e930) into master (9967287) will increase coverage by 0.11%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #311      +/-   ##
==========================================
+ Coverage   58.73%   58.85%   +0.11%     
==========================================
  Files           8        8              
  Lines         492      491       -1     
==========================================
  Hits          289      289              
+ Misses        203      202       -1     

Impacted Files	Coverage Δ
src/repoutil.js	68.91% <ø> (ø)
src/versionutil.js	55.55% <0.00%> (+0.76%)	:arrow_up:

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more