Correctly hide setConnectionService

Bug: 22957023
Change-Id: I3245e830aac6e06baf4131b461c21dbc07e8a632
diff --git a/system-api/23.txt b/system-api/23.txt
index 4855f91..ac5fd90 100644
--- a/system-api/23.txt
+++ b/system-api/23.txt
@@ -29821,7 +29821,6 @@
     method public final void setConferenceableConnections(java.util.List<android.telecom.Connection>);
     method public final void setConferenceables(java.util.List<android.telecom.Conferenceable>);
     method public final void setConnectionCapabilities(int);
-    method public final void setConnectionService(android.telecom.ConnectionService);
     method public final void setDialing();
     method public final void setDisconnected(android.telecom.DisconnectCause);
     method public final void setInitialized();