Merge "[Telephony] remove the RuntimeException thrown" am: 841bcc5b03

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2033543

Change-Id: Icf8608fffcb767382007635af9cfb2a202b1d8b0

telephony/java/android/telephony/ims/ImsMmTelManager.java

@@ -618,9 +618,9 @@ public class ImsMmTelManager implements RegistrationManager {
 
         ITelephony iTelephony = getITelephony();
         if (iTelephony == null) {
-            throw new RuntimeException("Could not find Telephony Service.");
+            Log.w("ImsMmTelManager", "Could not find Telephony Service.");
+            return;
         }
-
         try {
             iTelephony.unregisterMmTelCapabilityCallback(mSubId, c.getBinder());
         } catch (RemoteException e) {