feat(cordova-raw): use cdv promise

Author: alexblom

lib/targets/cordova/tasks/raw.js

@@ -12,15 +12,7 @@ module.exports = Task.extend({
   api: undefined,
 
   cordovaPromise(/* rawArgs */) {
-    let args = Array.prototype.slice.call(arguments);
-    let defer = new RSVP.defer();
-    args.push(function() {
-      return defer.resolve();
-    });
-
-    cordovaProj[this.api].apply(this, args);
-
-    return defer.promise;
+    return cordovaProj[this.api].apply(null, arguments)
   },
 
   run() {