getCarrierConfigValues() is removed from MmsManager and SMS service
loads Carrier configuration values directly since MmsService could
return null or cached config instead if an app requests the config by
receiving ACTION_CARRIER_CONFIG_CHANGED before the config is loaded
newly in MmsService by ACTION_CARRIER_CONFIG_CHANGED.
Bug: 145768042
Test: manual
Change-Id: Idc21015cab2902bd0f67e2131ea89b04c4fc4f5e
Merged-In: Idc21015cab2902bd0f67e2131ea89b04c4fc4f5e
Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>