Enable printing of Foundation typography classes

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Remove legacy typography styles

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Remove all non-variablised pixel font sizes

While drastic this is a necessary step towards refactoring: moving
from arbitrary font-sizes to typography based on ratios.

Signed-off-by: Alex Coles <alex@alexbcoles.com>