drop jQuery support completely from knockoutjs

vendors/knockout/src/options.js

@@ -1,7 +1,6 @@
 // For any options that may affect various areas of Knockout and aren't directly associated with data binding.
 ko.options = {
     'deferUpdates': false,
-    'useOnlyNativeEvents': false,
     'foreachHidesDestroyed': false
 };
 

vendors/knockout/src/utils.domNodeDisposal.js

@@ -28,9 +28,6 @@ ko.utils.domNodeDisposal = new (function () {
         // Erase the DOM data
         ko.utils.domData.clear(node);
 
-        // Perform cleanup needed by external libraries (currently only jQuery, but can be extended)
-        ko.utils.domNodeDisposal["cleanExternalData"](node);
-
         // Clear any immediate-child comment nodes, as these wouldn't have been found by
         // node.getElementsByTagName("*") in cleanNode() (comment nodes aren't elements)
         if (cleanableNodeTypesWithDescendants[node.nodeType]) {
@@ -86,14 +83,6 @@ ko.utils.domNodeDisposal = new (function () {
             ko.cleanNode(node);
             if (node.parentNode)
                 node.parentNode.removeChild(node);
-        },
-
-        'cleanExternalData' : function (node) {
-            // Special support for jQuery here because it's so commonly used.
-            // Many jQuery plugins (including jquery.tmpl) store data using jQuery's equivalent of domData
-            // so notify it to tear down any resources associated with the node & descendants here.
-            if (jQuery && jQuery['cleanData'])
-                jQuery['cleanData']([node]);
         }
     };
 })();

vendors/knockout/src/utils.js

@@ -246,10 +246,7 @@ ko.utils = (function () {
         registerEventHandler: function (element, eventType, handler) {
             var wrappedHandler = ko.utils.catchFunctionErrors(handler);
 
-            if (!ko.options['useOnlyNativeEvents'] && jQuery) {
-                jQuery(element)['on'](eventType, wrappedHandler);
-            } else
-                element.addEventListener(eventType, wrappedHandler, false);
+            element.addEventListener(eventType, wrappedHandler, false);
         },
 
         triggerEvent: function (element, eventType) {