Revert "cm: apns-conf.xml: (eHRPD/LTE handoff) Change pdp type for default APNs"

The error that this patch was guarding against is no longer reproducible
on d2spr.

This reverts commit 285d4c2a4d17bbfde8c13dc88f768d7cc9bc2f54.

Change-Id: I373ad22a021de74df4f8907dc79717719708431d