chore: Remove unused imports from TWIRL templates and silence false positives

[mpro7]

Pull Request Checklist

Task Description/Number

I've got annoyed by warns thrown by the complier therefore removed unused TWIRL imports.
Additionally silenced the false positive warnings coming from these templates which are not supported in Scala version we are using, but are again supported in Scala 3.5.0: scala/scala3#18783

PR Type

• build/chore: maintenance tasks (no production code change)
• docs: documentation changes (no production code change)
• feat: represents new features
• fix: represents bug fixes
• perf: performance improvements
• refactor: represents production code refactoring
• test: adding or refactoring tests (no production code change)
• deprecated: Deprecation warning (ideally referencing a migration guide)

Basic requirements for bug fixes and features

• Tests for the changes have been added
• Docs have been added / updated

Does this PR introduce a breaking change?

• Yes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.89%. Comparing base (6ebe8e7) to head (3a1dac4).
Report is 64 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3351      +/-   ##
==========================================
+ Coverage   83.04%   83.89%   +0.85%     
==========================================
  Files         290      295       +5     
  Lines       23087    23308     +221     
==========================================
+ Hits        19172    19555     +383     
+ Misses       3915     3753     -162     

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[siers]

Does this mean that fatal warnings can be enabled yet?

[mpro7]

Does this mean that fatal warnings can be enabled yet?

TBH have no idea. It would need to be checked in the release notes.