branch wip-ungrafting deleted (was 2c11e7b)

[guix-commits]

civodul pushed a change to branch wip-ungrafting
in repository guix.

     was 2c11e7b  Merge remote-tracking branch 'origin/master' into 
wip-ungrafting

The revisions that were on this branch are still contained in
other references; therefore, this change does not discard any commits
from the repository.