Mark old APIs as @removed

Remove deprecated SystemApis as a part of a refactor.

Bug: 115943523
Test: unit, manual
Change-Id: Ic8955be6f57411ba18b5f049c6519d1c1d01d937
diff --git a/api/system-removed.txt b/api/system-removed.txt
index 961026b..69ad3ea 100644
--- a/api/system-removed.txt
+++ b/api/system-removed.txt
@@ -143,3 +143,12 @@
 
 }
 
+package android.telephony {
+
+  public class TelephonyManager {
+    method public deprecated void answerRingingCall();
+    method public deprecated boolean endCall();
+  }
+
+}
+