Revert "msm8960-common: fix up tethering"

This reverts commit fbe8724128545db23cf125fbe6743c764532b572.

Change-Id: I552862372f4b9a12d05d92f6154834be62d7e88f
Merge branch 'cm-11.0' of github.com:CyanogenMod/android_device_samsung_msm8960-common into cm-11.0