Convert remaining uses of alloc] init] to new]

Summary: public

We moved to using `new` instead of `alloc] init` but there was still some calls
left.

Reviewed By: javache

Differential Revision: D2604679

fb-gh-sync-id: ff7300ecbedb55dd5e93873592598810c9b87808

Examples/UIExplorer/UIExplorerUnitTests/LayoutSubviewsOrderingTest.m

@@ -20,10 +20,10 @@
 - (void)testLayoutSubviewsOrdering
 {
   // create some Views and ViewControllers
-  UIViewController *parentVC = [[UIViewController alloc] init];
-  UIView *parentView = [[UIView alloc] init];
-  UIViewController *childVC = [[UIViewController alloc] init];
-  UIView *childView = [[UIView alloc] init];
+  UIViewController *parentVC = [UIViewController new];
+  UIView *parentView = [UIView new];
+  UIViewController *childVC = [UIViewController new];
+  UIView *childView = [UIView new];
 
   // The ordering we expect is:
   //   parentView::layoutSubviews