Remove unused shortcut

What does this MR do and why?

We removed 1 shortcut that is not used. We removed exporting of shortcuts that are never imported. We added a comment about how these shortcuts still are usable but by other mechanisms: via @key[down|up] in vue or other ways.

We improve a couple of types.

Screenshots or screen recordings

Before	After

How to set up and validate locally

N/A

MR acceptance checklist

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