BBC Code Block Height
BBC Code Block Height

!bugfix - Code blocks have a minimum height of 10em, which is too
large. By removing the height attribute in the CSS it allows the block
to shrink or expand based on how much is inputted.

Signed-off-by: emanuele <ac2faa8b943b3fcadaf05ed2541f4eebde440ed7@gmail.com>

StealthWombat/SMF2.1-more-forkery,georaldc/SMF2.1,MustafaCan/SMF2.1,mkress/SMF2.1,margarett/SMF2.1,mkress/SMF2.1,MustafaCan/SMF2.1,georaldc/SMF2.1,margarett/SMF2.1,StealthWombat/SMF2.1-more-forkery,mkress/SMF2.1