Revert of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm

Index: webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm b/webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm
deleted file mode 100644
index 7e8aea62955dd61e20f3208150c780a99547ca4b..0000000000000000000000000000000000000000
--- a/webrtc/sdk/objc/Framework/Classes/Common/RTCUIApplication.mm
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "RTCUIApplication.h"
-
-#if defined(WEBRTC_IOS)
-
-#import <UIKit/UIKit.h>
-
-bool RTCIsUIApplicationActive() {
-  UIApplicationState state = [UIApplication sharedApplication].applicationState;
-  return state == UIApplicationStateActive;
-}
-
-#endif // WEBRTC_IOS