Remove unused apps/dav/js/schedule-response.js

File is not included in the schedule-response-options template and is
commented out. The commented code relies on the buttonset() jQuery
plugin, which is deprecated.
https://api.jqueryui.com/buttonset/

If this code was to be re-introduced, it would take a different form.

Signed-off-by: François Freitag <mail@franek.fr>

apps/dav/js/schedule-response.js

@@ -1,3 +0,0 @@
-// window.addEventListener('DOMContentLoaded', function() {
-// 	$('#selectPartStatForm').buttonset();
-// });

apps/dav/templates/schedule-response-options.php

@@ -1,6 +1,5 @@
 <?php
 style('dav', 'schedule-response');
-//script('dav', 'schedule-response');
 ?>
 
 <div class="update">