Use sim language for VZW.

Instead of doing it 204-04 + gid, change has been made for
MCC 204. This can be revisited if there is any 204 carrier for
which sim language is not set correctly.

Test: none; reverting to earlier behavior for these mcc-mncs
Bug: 37704287
Change-Id: I30661e6467bbf5afc3ebb2ae58ddf36df7d55ce6