These strings had been replaced over time and the original versions
marked ***OUTDATED*** to allow for the original wordings to be reused
by the translators who had only translated the original ones.
(See lang/README-programmers.txt.)
Now, these strings have all been updated in every language, so it's
time to clean them up!
Now that the language files are fairly stable, we should be able to do
this without any accidental reverts taking place (if any do happen, it
should be easy to see and prevent)
