klte-common: remove bogus MMS overlay.

* This is already taken care of in samsung_qcom-common and is cuasing
data drops with some carriers after receiving an MMS as well as not
sending messages over 160 characters on some carriers.

Change-Id: If433179e5b8ededbe1e2960f7ffa5cf6ca5f0c71
Merge pull request #5 from CyanogenMod/cm-11.0

klte-common: remove bogus MMS overlay.