Remove downcast

Author: jfarcand

src/test/java/com/ning/http/client/async/ListenableFutureTest.java

@@ -41,7 +41,7 @@ public void testListenableFuture() throws Throwable {
         final AtomicInteger statusCode = new AtomicInteger(500);
         AsyncHttpClient ahc = getAsyncHttpClient(null);
         final CountDownLatch latch = new CountDownLatch(1);
-        final Future<Response> future = ((ListenableFuture<Response>)ahc.prepareGet(getTargetUrl()).execute());
+        final Future<Response> future = ahc.prepareGet(getTargetUrl()).execute();
         ((ListenableFuture)future).addListener(new Runnable(){
 
             public void run() {