liblockfile is currently required only as a build dependency of emacs, but it is redundant (since the emacs build does not actually use it).

The dependency in emacs was just removed in Fedora Rawhide [1] and a MR [2] is open for c10s.

[1] https://src.fedoraproject.org/rpms/emacs/pull-request/40
[2] https://gitlab.com/redhat/centos-stream/rpms/emacs/-/merge_requests/11