Replace WP search with Google search (menu bar)

I’ve decided to replace the menu entirely with Ubermenu.
I see that Ubermenu the easy integrate function does not work with this theme.

I’m having some difficulty integrating my code manually in the header.php, what do I remove to get my ubermenu to work?

Code I need to add: <?php ubermenu( ‘main-um’ ); ?>

// Main menu
                        if( has_nav_menu( 'main' ) ) {
 				wp_nav_menu( array( 'container' => '', 'theme_location' => 'main', 'items_wrap' => '<ul class="menu-main mobile-menu superfish">%3$s</ul>' ) );
			} else {
				echo '<ul class="menu-main mobile-menu superfish"><li class="current_page_item"><a href="#">' . __( 'Add a menu', 'justwrite' )  . '</a></li><li><a href="#">' . __( 'Main Menu Location', 'justwrite' )  . '</a></li></ul>';
			}
		?>

        <a href="#" class="mobile-menu-button"><?php ac_icon( 'navicon' ) ?></a>
        <?php do_action( 'ac_action_main_menu_after' ); // After main menu action ?>
        <?php if ( !get_theme_mod( 'ac_disable_minisidebar' ) ) { ?>
        <a href="#" class="browse-more" id="browse-more"><?php echo ac_icon('ellipsis-v', false) // . __( 'Browse', 'justwrite' ) ?></a>
        <?php } ?>
        <?php do_action( 'ac_action_search_btn_before' ); // Before search button action ?>
        <a href="#" class="search-button"><?php ac_icon( 'search' ) ?></a>
        <?php do_action( 'ac_action_search_btn_after' ); // After search button action ?>

        <div class="search-wrap nobs">
        	<form role="search" id="header-search" method="get" class="search-form" action="<?php echo esc_url( home_url( '/' ) ); ?>">
            	<input type="submit" class="search-submit" value="<?php _e( 'Search', 'justwrite' ); ?>" />
            	<div class="field-wrap">
					<input type="search" class="search-field" placeholder="<?php _e( 'type your keywords ...', 'justwrite' ); ?>" value="<?php get_search_query(); ?>" name="s" title="<?php _e( 'Search for:', 'justwrite' ); ?>" />
				</div>
			</form>
        </div><!-- END .search-wrap -->

    </nav><!-- END .menu-wrap -->

    <?php do_action( 'ac_action_menu_wrap_after' ); // After menu wrap action ?>

</div><!-- END .wrap -->
<?php do_action( 'ac_action_header_wrap_after' ); // After header wrap action ?>

Not a problem thanks, I’ve removed all code relating to the menu from the header, replacing it with the php code. Problem solved.

Thanks for responding though.