Deprecated: Drop size and andSelf methods

Fixes gh-1749
Closes gh-1822

src/deprecated.js

@@ -1,13 +1,2 @@
-define([
-	"./core",
-	"./traversing"
-], function( jQuery ) {
-
-// The number of elements contained in the matched element set
-jQuery.fn.size = function() {
-	return this.length;
-};
-
-jQuery.fn.andSelf = jQuery.fn.addBack;
-
+define(function() {
 });