Remove unused arguments

[fabianegli]

Remove unused arguments and some other minor code maintenance.

WIP until #1817 is clarified. => It has been decided to make these changes - WIP lablel removed.

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[codecov]

Codecov Report

Merging #1818 (a2b8628) into dev (0c904f4) will decrease coverage by 0.02%.
The diff coverage is 68.42%.

@@            Coverage Diff             @@
##              dev    #1818      +/-   ##
==========================================
- Coverage   63.77%   63.74%   -0.03%     
==========================================
  Files          41       41              
  Lines        4911     4913       +2     
==========================================
  Hits         3132     3132              
- Misses       1779     1781       +2     

Impacted Files	Coverage Δ
nf_core/modules/lint/__init__.py	82.88% <ø> (ø)
nf_core/modules/test_yml_builder.py	49.54% <33.33%> (ø)
nf_core/lint_utils.py	73.68% <40.00%> (-4.10%)	⬇️
nf_core/modules/lint/main_nf.py	64.47% <87.50%> (ø)
nf_core/modules/lint/module_deprecations.py	85.71% <100.00%> (ø)
nf_core/modules/lint/module_tests.py	70.73% <100.00%> (ø)
nf_core/modules/lint/module_todos.py	100.00% <100.00%> (ø)

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[ewels]

Nice!