2011 deleted search box but it still causes movement of labels in nav menu

Hello.

I am trying to remove the search box altogetherfrom the nav menu.
However when I comment out in the header.php, the search box disappears but labels are still being pushed onto two lines.

<!-- <?php get_search_form(); ?> -->
				</div>
			<?php
				else :
			?>
				<!-- <?php get_search_form(); ?> -->
			<?php endif; ?>

https://www.union.ic.ac.uk/rsm/exec