We've decided that this catchall when we didn't get input for better
names should be deprecated for new projects. Drop the suggestions that
x/ namespace be used if a different namespace can't be dreamt up.
Hopefully, this pushes people towards selecting a reasonable namespace
for their new project.
Change-Id: If281a2507f40f338e7f6b09dfe7102f1d497d6fa
25b41ba1eb