Remove @UnsupportedAppUsage annotation from new dream API

This aidl API is new, and there are no existing apps using it. Therefore it does not need this annotation.

Bug: 325102385
Change-Id: I9b77699cf131fbc2058fb664fa4d36bd8137fb5b
diff --git a/core/java/android/service/dreams/IDreamManager.aidl b/core/java/android/service/dreams/IDreamManager.aidl
index 09e6b5d..c489c58 100644
--- a/core/java/android/service/dreams/IDreamManager.aidl
+++ b/core/java/android/service/dreams/IDreamManager.aidl
@@ -38,7 +38,6 @@
     boolean isDreaming();
     @UnsupportedAppUsage
     boolean isDreamingOrInPreview();
-    @UnsupportedAppUsage
     boolean canStartDreaming(boolean isScreenOn);
     void finishSelf(in IBinder token, boolean immediate);
     void startDozing(in IBinder token, int screenState, int screenBrightness);