Revert "Telephony: Add data rat constant"

See http://review.cyanogenmod.org/#/c/55832/ for reasons.

This reverts commit 60f79613897f74cacceafad7bcd7260fe25bb1e5.

Change-Id: I7eea322dec1cbb3df33e4ee10d4e73fde0c6e934
Merge "Revert "Telephony: Add data rat constant"" into cm-11.0