remove unused variable

[RubenRubens]

width was never used.

[codecov]

Codecov Report

Merging #584 (1afae0a) into master (3098c90) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #584   +/-   ##
=======================================
  Coverage   94.26%   94.26%           
=======================================
  Files          29       29           
  Lines        6348     6348           
  Branches      675      675           
=======================================
  Hits         5984     5984           
  Misses        226      226           
  Partials      138      138           

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[jmwright]

@RubenRubens The MacOS builds failed because of something that seems internal to Azure, so I'm re-running them. Hopefully that fixes it. This change looks good otherwise, thanks.