Fixes build issue based on usage of Android O specific API

webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java

Index: webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java
index 992d9188ba9881dd7492ea675957a1deb5c87421..fb4914e9c7abc8a3a9ea6da9ef71caad284bcf70 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java
@@ -451,9 +451,6 @@ public class AppRTCAudioManager {
         } else if (type == AudioDeviceInfo.TYPE_USB_DEVICE) {
           Log.d(TAG, "hasWiredHeadset: found USB audio device");
           return true;
-        } else if (type == AudioDeviceInfo.TYPE_USB_HEADSET) {
-          Log.d(TAG, "hasWiredHeadset: found USB headset");
-          return true;
         }
       }
       return false;