add remove coupon to MB mode

1. go to /wp-content/plugins/events-manager-pro/add-ons/multiple-bookings/multiple-bookings.js

2. add this snippet (below line 23 )

/**************************/
$(document).on( 'click', '.em-cart-table a.em-cart-table-actions-remove-coupon', function(e){
	e.preventDefault();
	//var event_id = $(this).attr('rel');
	container = $(this).parents('.em-cart-table').first().parent();
	$.ajax({
		url: EM.bookingajaxurl,
		data: { 'action':'emp_checkout_remove_coupon' },
		dataType: 'jsonp',
		type:'post',
		beforeSend: function(formData, jqForm, options) {
			$('.em-booking-message').remove();
			container.append('<div id="em-loading"></div>');
		},
		success : function(response, statusText, xhr, $form) {
			$('#em-loading').remove();
			//show error or success message
			if(response.result){
				//$(document).trigger('em_cart_refresh');
				location.reload();
			}else{
				$('<div class="em-booking-message-error em-booking-message">'+response.message+'</div>').insertBefore(em_booking_form);
				$('html, body').animate({ scrollTop: em_booking_form.parent().offset().top - 30 }); //sends user back to top of form
			}
		}
	});
	return false;
});
/**************************/


3. go to your theme functions.php then add this snippet
/**************************/
add_action('wp_ajax_emp_checkout_remove_coupon','remove_coupon');
function remove_coupon(){

  $EM_Multiple_Booking = EM_Multiple_Bookings::get_multiple_booking();
  $result = true;

  $EM_Multiple_Booking->booking_meta['coupon'] = array();

  $EM_Multiple_Booking->calculate_price();

  if( defined('DOING_AJAX') ){
   $return = array('result'=>$result, 'message'=>$feedback);
   echo EM_Object::json_encode($return);
  }else{
   wp_redirect(wp_get_referer());
  }

  die();
}
/**************************/


4. create new directory/folders inside your theme

e.g.
wp-content > themes > Your Theme > plugins > events-manager-pro > multiple-bookings > cart-table.php

copy the contents from this link - http://pastebin.com/jUnPZXXc