term: try harder to get the right geometry
term: don't set any geometry hints

It seems that it just doesn't work. Maybe there is a bug in Awesome
because no base size seems to fix the fact that the terminal window is
one pixel too small and therefore we have an almost full blank line at
the bottom.
term: try to remove geometry hints when fullscreen

Doesn't work either. Just for the record.
Revert "term: try to remove geometry hints when fullscreen"

This reverts commit 8f711cccf6531ca59eb9ea59d62f38ddd04c9410.