jquery core: removing the body optimization, as it is then handled by $("TAG").

src/core.js

@@ -52,11 +52,6 @@ jQuery.fn = jQuery.prototype = {
 			return this;
 		}
 
-		// $("body"): Shortcut for quickly finding the body element
-		if ( selector === "body" && !context && document.body ) {
-			selector = document.body;
-		}
-
 		// Handle $(DOMElement)
 		if ( selector.nodeType ) {
 			this.context = this[0] = selector;