Marking @SystemApi permissions @hide too.

Bug: 28287631
Change-Id: Ie0375620689263ebafd6850f2261e090f09521b1
diff --git a/api/test-removed.txt b/api/test-removed.txt
index de8a724..f9fce40 100644
--- a/api/test-removed.txt
+++ b/api/test-removed.txt
@@ -368,6 +368,10 @@
     field public static final java.lang.String VOLUME_VOICE = "volume_voice";
   }
 
+  public static final class Telephony.Sms.Intents {
+    field public static final java.lang.String SMS_EMERGENCY_CB_RECEIVED_ACTION = "android.provider.Telephony.SMS_EMERGENCY_CB_RECEIVED";
+  }
+
 }
 
 package android.test.mock {