[PRQ#65300] Deletion Request for hdr10plus_tool

[notify]

npreining [1] filed a deletion request for hdr10plus_tool [2]:

hdr10plus-tool is now part of core Arch, so the AUR package of mine
can be deleted.

[1] https://aur.archlinux.org/account/npreining/
[2] https://aur.archlinux.org/pkgbase/hdr10plus_tool/