There's a merged pull request on the void-packages repository

lmms: remove broken KCheckAccelerators workaround
https://github.com/void-linux/void-packages/pull/41313

Description:
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#### Testing the changes
- I tested the changes in this PR: **briefly**

Fixes the following segfault:
https://github.com/LMMS/lmms/issues/6587

Afaict the original workaround should already be fixed by:
https://invent.kde.org/frameworks/kxmlgui/-/commit/02b523bad09aab062355e46771889b0f3709692f

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