m7: remove tmo/att default LTE apns

These are set in vendor/cm now: http://review.cyanogenmod.org/60734

Change-Id: I6dedc4cc0e98448dbaa8742d6dd6600f8186fbfb
m7: remove unneeded vendorsetup.sh

Change-Id: Ib72a5cc7625b0b71605021a7268070e468ce0a09
Merge branch "cm-11.0" into kylin