This reverts commit 5a82bc5e87
and commit 55dc246168.
That turns out to not be the way l10n of underlays is handled, instead
these changes are being made to the l10n branch, and the Danish
underlay translation update will be copied into master from that
branch.
This is necessary to avoid tying that branch up in a state where
it is horribly diverged from master and cannot be updated anymore.
f1671eeb8b