Remove unnecessary hipri from Softbank apn

As commit 5ca7270b9b785b85699f12cd9f00d00ad096417f,
hipri is a synonym for default and used only at runtime
and is not needed in the apns-conf file.
And change authtype to 2 from 3.

Change-Id: I743f81dc1cfb81103090206a0e3da136e7169a23
1 file changed