qml: Remove the swipe-to-close feature of the keyboard

[dobey]

There have been numerous problems with this interaction over the years,
and the implementation to make swipe to close work is a bit spread around.
One consistent issue has been the keyboard getting stuck partly closed, and
swiping upward does nothing, while in some cases swiping upward could also
cause the keyboard to be moved partially off the screen. This implementation
would also be in conflict of possible implementation of skeyer swipe support
in the future. So just remove it for now.

[espidev]

I worry if this would have an impact on Lomiri, in Plasma Mobile we have a keyboard close button, is that something that exists there?

[dobey]

I worry if this would have an impact on Lomiri, in Plasma Mobile we have a keyboard close button, is that something that exists there?

Ubuntu Touch still uses lomiri-keyboard, so this doesn't effect that. One can also just tap literally anywhere else in an app, and the keyboard should close, once whatever focused input field loses focus.

[espidev]

Any thoughts on perhaps replacing the logic with: #211 instead? I think it works well in avoiding the need to resize the keyboard window while still retaining the gesture, which can resolve the initial issue with half-finished gestures and the like.