This reverts commit 8dcc83a3.
Revert "Migrate Telenor Norway APN to IPV6"
This reverts commit 2f9f33b6.
* IPv6 tethering is partially broken in CM11, and IPv6 only APN
is not working on older devices, so revert back to IPv4 only APN.
Change-Id: I89ec93e949886fec297132c2ec70a46fa69862a1
