Revert "Added missing languages on HELP_LINGUAS"

This reverts commit b06575a4622f788e37b042680c169d026e7f4ec1.
help: Remove 0% translations

They haven't been updated for the help rewrite, and should *not* be added
back to HELP_LINGUAS without having been updated first. It's just a waste to
ship 0% translations.