Suppress all hidden abstract methods in constructable classes.

Having a hidden abstract method for a class that can be extended
means that public implementors cannot implement these hidden methods
posing a risk that custom implementations will not have required
abstract methods resulting in an exception.

Bug: 151134792
Test: make update-api
Change-Id: I758d12465fabc671be19bedeeceb16885de23c87
Exempt-From-Owner-Approval: large scale suppression of existing issues,
    no-op in terms of behavior

telecomm/java/android/telecom/InCallService.java

@@ -680,6 +680,7 @@ public abstract class InCallService extends Service {
     public static abstract class VideoCall {
 
         /** @hide */
+        @SuppressWarnings("HiddenAbstractMethod")
         public abstract void destroy();
 
         /**