Refactor utilities/imports.py

[carmocca]

What does this PR do?

Minor clean-up and sorted _*_AVAILABLE variables

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[pep8speaks]

Hello @carmocca! Thanks for updating this PR.

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2021-02-10 15:07:10 UTC

[codecov]

Codecov Report

Merging #5874 (e3114ce) into release/1.2-dev (a028171) will decrease coverage by 5%.
The diff coverage is 94%.

@@               Coverage Diff                @@
##           release/1.2-dev   #5874    +/-   ##
================================================
- Coverage               88%     83%    -5%     
================================================
  Files                  181     181            
  Lines                12964   12964            
================================================
- Hits                 11462   10780   -682     
- Misses                1502    2184   +682