IccSmsInterfaceManager: Don't intercept short-code premium messages

For both charging and potential timing factors on emergency and carrier
services, short codes should be delivered directly to the network.

Change-Id: If9d288048f9925573f8c5f2e51f0c2df789277bd

Patchset: 1
http://review.cyanogenmod.org/#/c/55462/