chore: remove unused import and code

[DavideMininni-Fincons]

Removed unused method on sbb-datepicker-toggle and imports in sbb-logo and sbb-signet.

[codecov-commenter]

Codecov Report

Attention: 59 lines in your changes are missing coverage. Please review.

Comparison is base (638977d) 92.61% compared to head (278d88d) 96.03%.
Report is 67 commits behind head on master.

❗ Current head 278d88d differs from pull request most recent head dac05d0. Consider uploading reports for the commit dac05d0 to get more accurate results

Files	Patch %	Lines
...nents/core/common-behaviors/slot-child-observer.ts	93.33%	5 Missing ⚠️
src/components/core/dom/breakpoint.ts	42.85%	4 Missing ⚠️
src/components/card/card-action/card-action.ts	70.00%	3 Missing ⚠️
src/components/core/dom/dataset.ts	25.00%	3 Missing ⚠️
src/components/core/dom/host-context.ts	40.00%	3 Missing ⚠️
src/components/header/header/header.ts	50.00%	3 Missing ⚠️
src/components/tooltip/tooltip/tooltip.ts	25.00%	3 Missing ⚠️
src/components/calendar/calendar.ts	75.00%	2 Missing ⚠️
src/components/core/dom/find-referenced-element.ts	60.00%	2 Missing ⚠️
src/components/menu/menu/menu.ts	75.00%	2 Missing ⚠️
... and 25 more

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2221      +/-   ##
==========================================
+ Coverage   92.61%   96.03%   +3.42%     
==========================================
  Files          53      329     +276     
  Lines        2409    39079   +36670     
  Branches      254     2178    +1924     
==========================================
+ Hits         2231    37529   +35298     
- Misses        176     1504    +1328     
- Partials        2       46      +44     

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[jeripeierSBB]

LGTM, investigate why eslint doesn't find it

[kyubisation]

LGTM 👍