Revert "Small update for menu.php"

This reverts commit a3dea65ca2f0d1e75d6fb90e4705f987624982ad.
This is for the purposes of better testing how to fix long menu item
text overflowing onto subsequent items.
Fix menu item text overlapping other items.

Remove limits on menu item height. Menu headers cannot expand, so their
height remains limited. Possible options include smaller font, wider
menus, or using shorter phrases for headers.