[PRQ#57480] Deletion Request for hdf5-1.12

[notify]

MarsSeed [1] filed a deletion request for hdf5-1.12 [2]:

Legacy package, broken since submission.
But not a single build on AUR requires this.

[1] https://aur.archlinux.org/account/MarsSeed/
[2] https://aur.archlinux.org/pkgbase/hdf5-1.12/