MessagingConfigurationManager and SmsManager api changes

Bug 17243357: MessagingConfigurationManager is replaced with
SmsManager.getCarrierConfigValues

Remove the newly added SmsManager APIs taking a subId parameter. We now
create SmsManagers per requested subId.

Change-Id: Ifa95802b6f723c4986197a2b7d6fcbc43f4e0792