Remove jquery_ui due to size & limited use

Fixes: #21881

core/constant_inc.php

@@ -605,12 +605,10 @@
 define( 'FTP', 1 );                                 # DISK
 define( 'ERROR_FTP_CONNECT_ERROR', 16 );            # N/A
 
-# JQuery and JQuery UI
+# JQuery
 # hashes acquired with command 'cat file.js | openssl dgst -sha256 -binary | openssl enc -base64 -A'
 define( 'JQUERY_VERSION', '2.2.4' );
 define( 'JQUERY_HASH', 'sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=' );
-define( 'JQUERY_UI_VERSION', '1.11.4' );
-define( 'JQUERY_UI_HASH', 'sha256-xNjb53/rY+WmG+4L6tTl9m6PpqknWZvRt0rO1SRnJzw=' );
 
 # Bootstrap & FontAwesome
 define( 'BOOTSTRAP_VERSION', '3.3.6' );

core/html_api.php

@@ -207,13 +207,6 @@ function require_css( $p_stylesheet_path ) {
 function html_css() {
 	global $g_stylesheets_included;
 	html_css_link( config_get( 'css_include_file' ) );
-
-	if ( config_get_global( 'cdn_enabled' ) == ON ) {
-		html_css_cdn_link( 'https://ajax.googleapis.com/ajax/libs/jqueryui/' . JQUERY_UI_VERSION . '/themes/smoothness/jquery-ui.min.css' );
-	} else {
-		html_css_link( 'jquery-ui-' . JQUERY_UI_VERSION . '.min.css' );
-	}
-
 	html_css_link( 'common_config.php' );
 	# Add right-to-left css if needed
 	if( lang_get( 'directionality' ) == 'rtl' ) {
@@ -303,10 +296,8 @@ function html_head_javascript() {
 
 	if ( config_get_global( 'cdn_enabled' ) == ON ) {
 		html_javascript_cdn_link( 'https://ajax.googleapis.com/ajax/libs/jquery/' . JQUERY_VERSION . '/jquery.min.js', JQUERY_HASH );
-		html_javascript_cdn_link( 'https://ajax.googleapis.com/ajax/libs/jqueryui/' . JQUERY_UI_VERSION . '/jquery-ui.min.js', JQUERY_UI_HASH );
 	} else {
 		html_javascript_link( 'jquery-' . JQUERY_VERSION . '.min.js' );
-		html_javascript_link( 'jquery-ui-' . JQUERY_UI_VERSION . '.min.js' );
 	}
 
 	html_javascript_link( 'dropzone.min.js');

js/common.js

@@ -89,25 +89,6 @@ $(document).ready( function() {
         SetCookie("collapse_settings", t_cookie);
     });
 
-    $('input[type=text].autocomplete').autocomplete({
-		source: function(request, callback) {
-			var fieldName = $(this).attr('element').attr('id');
-			var postData = {};
-			postData['entrypoint']= fieldName + '_get_with_prefix';
-			postData[fieldName] = request.term;
-			$.getJSON('xmlhttprequest.php', postData, function(data) {
-				var results = [];
-				$.each(data, function(i, value) {
-					var item = {};
-					item.label = $('<div/>').text(value).html();
-					item.value = value;
-					results.push(item);
-				});
-				callback(results);
-			});
-		}
-	});
-
 	$('a.dynamic-filter-expander').click(function(event) {
 		event.preventDefault();
 		var fieldID = $(this).attr('id');