CON-1005 | Removed height for Search box from touchScreen.scss

@qaga @kvas-damian @lukaszkonieczny @vforge I started some testing and this change even fixes the bug where the button becomes few pixels taller than the input field -- in the form on the Special:Search page (like http://fallout.wikia.com/wiki/Special:Search?search=geck&fulltext=Search).