Cleanup imports

[alexh-sauce]

Automatically sort / remove unused imports with google-java-format

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 36.36%. Comparing base (a9ed8f8) to head (157d18f).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #421   +/-   ##
=========================================
  Coverage     36.36%   36.36%           
  Complexity      122      122           
=========================================
  Files            25       25           
  Lines           869      869           
  Branches         63       63           
=========================================
  Hits            316      316           
  Misses          533      533           
  Partials         20       20           

Flag	Coverage Δ
tests	36.36% <ø> (ø)
unittests	36.36% <ø> (ø)

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[diemol]

Thank you, @alexh-sauce!