[PRQ#54072] Deletion Request for libdcmtk12

MarsSeed [1] filed a deletion request for libdcmtk12 [2]: Cleanup after merge request PRQ#54070: libdicomscope-jni→libdicomscope-jni-bin. Both of the above are binary builds, and the latter is newer, which requires a higher libdcmtk version. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/libdcmtk12/