Disable locale/translation generation in plasma-workspace [skip ci]
This is workaround to get binary repository working, while I can't reproduce the ki18n bug at all, and is not fixed upstream, let's workaround it by disabling po file generation in plasma-workspace for now.
See issue #1458 (closed)
TODO: revert when ki18n is fixed upstream.
[x] Merge on GitHub (see https://postmarketos.org/merge)