[PRQ#52917] Deletion Request for qt58

[notify]

ftschindler [1] filed a deletion request for qt58 [2]:

It was really useful for a time but with most version pins, is
obsolete at some point.

[1] https://aur.archlinux.org/account/ftschindler/
[2] https://aur.archlinux.org/pkgbase/qt58/