[aur-general] Removal requests

[A Rojas]

libnm-qt5-git
https://aur.archlinux.org/packages/libnm-qt5-git/

libmm-qt5-git
https://aur.archlinux.org/packages/libmm-qt5-git/

Git trunk is new Qt5-based for both repos, so they are replaced by libnm-qt-
git and libmm-qt-git

kdeplasma-applets-networkmanagement-git
https://aur.archlinux.org/packages/kdeplasma-applets-networkmanagement-git/

This repo was abandoned long ago, development has moved to plasma-nm-git