Removed unnecessary upper/lowercase, it's all just lowercase now (since $.ajax...

Removed unnecessary upper/lowercase, it's all just lowercase now (since $.ajax will uppercase as-needed).

src/ajax.js

@@ -113,8 +113,8 @@ jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".sp
 	};
 });
 
-jQuery.each( [ "GET", "POST" ], function( i, method ) {
-	jQuery[ method.toLowerCase() ] = function( url, data, callback, type ) {
+jQuery.each( [ "get", "post" ], function( i, method ) {
+	jQuery[ method ] = function( url, data, callback, type ) {
 		// shift arguments if data argument was omited
 		if ( jQuery.isFunction( data ) ) {
 			type = type || callback;