Split out ajax extension

src/core.js

@@ -1181,36 +1181,3 @@ $.format = $.validator.format;
 
 }(jQuery));
 
-// ajax mode: abort
-// usage: $.ajax({ mode: "abort"[, port: "uniqueport"]});
-// if mode:"abort" is used, the previous request on that port (port can be undefined) is aborted via XMLHttpRequest.abort()
-(function($) {
-	var pendingRequests = {};
-	// Use a prefilter if available (1.5+)
-	if ( $.ajaxPrefilter ) {
-		$.ajaxPrefilter(function( settings, _, xhr ) {
-			var port = settings.port;
-			if ( settings.mode === "abort" ) {
-				if ( pendingRequests[port] ) {
-					pendingRequests[port].abort();
-				}
-				pendingRequests[port] = xhr;
-			}
-		});
-	} else {
-		// Proxy ajax
-		var ajax = $.ajax;
-		$.ajax = function( settings ) {
-			var mode = ( "mode" in settings ? settings : $.ajaxSettings ).mode,
-				port = ( "port" in settings ? settings : $.ajaxSettings ).port;
-			if ( mode === "abort" ) {
-				if ( pendingRequests[port] ) {
-					pendingRequests[port].abort();
-				}
-				pendingRequests[port] = ajax.apply(this, arguments);
-				return pendingRequests[port];
-			}
-			return ajax.apply(this, arguments);
-		};
-	}
-}(jQuery));