[PRQ#85302] Deletion Request for mingw-w64-qwt-qt6

[notify]

xantares [1] filed a deletion request for mingw-w64-qwt-qt6 [2]:

replaced by mingw-w64-qwt, matching what is done for the native
packages

[1] https://aur.archlinux.org/account/xantares/
[2] https://aur.archlinux.org/pkgbase/mingw-w64-qwt-qt6/