Revert "SamsungExynos3RIL: Handle UNSOL_DATA_CALL_LIST_CHANGED."

RIL_UNSOL_DATA_CALL_LIST_CHANGED is already being handled properly
using responseDataCallList in the parent RIL class. Handling it (improperly)
here using responseVoid breaks data connectivity on galaxysmtd in
some circumstances.

This reverts commit d11286f7e96aa4d477ee869b81aef33d91f1b70d.

Change-Id: I3f6b05ecb31049cab2d346a52f244b65bac5f551
Merge "Revert "SamsungExynos3RIL: Handle UNSOL_DATA_CALL_LIST_CHANGED."" into cm-10.2