Remove jQuery dependency

This request seems quite problematic given the only JS file in the project relies on core drupalSetSummary function which, even in branch 10.3.x, relies on jQuery.

I think it makes sense to remove the dependency. Core can require it, but the module itself doesn't need to. Eventually the goal is to remove the jQuery dependency from core (as I understand it), so it seems reasonable to get ahead of that.

What's the state in 2.x? That's where development should happen. Is jQuery already removed there? Then this might be closed outdated and people could switch to 2.x!

Great call, @anybody! I just looked at the 2.x branch and jQuery isn't used / required as a library. I'll leave it up to the maintainers to close this as outdated, but it strikes me as something that could be.