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 branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_samsung_klte-common into kk_mkt