Remove unused imports

[RoiSoleil]

I ran a PMD analysis using the category/java/bestpractices.xml/UnusedImports ruleset (along with UnusedPrivateField, UnusedPrivateMethod, and UnusedLocalVariable which turned up nothing) and removed the unused imports flagged across the project.

I wrote a python script to strip them out automatically, but excluded lines containing .* to prevent compilation breakage from false-positive wildcard reports. Tests and builds pass correctly.

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PR created automatically by Jules for task 569599873569338136 started by @RoiSoleil

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.39%. Comparing base (056906c) to head (791a72b).
⚠️ Report is 12 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #252      +/-   ##
============================================
+ Coverage     73.28%   73.39%   +0.11%     
- Complexity     3234     3242       +8     
============================================
  Files           420      421       +1     
  Lines         14435    14467      +32     
  Branches       1266     1267       +1     
============================================
+ Hits          10578    10618      +40     
+ Misses         3325     3316       -9     
- Partials        532      533       +1     

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