Revert "Add printf example."

This reverts commit 45e9e88edd8fb3d1b9a509259cffc16e9e33a3e0.

I forgot to commit other stuff to the Monad interface.

Signed-off-by: Austin Seipp <mad.one@gmail.com>
Add liftIxM{,2} to indexed monad interface.

Signed-off-by: Austin Seipp <mad.one@gmail.com>
Add printf example.

Signed-off-by: Austin Seipp <mad.one@gmail.com>
Tutorial: various fixes and verbiage reduction.

Signed-off-by: Austin Seipp <mad.one@gmail.com>