dlx: build.prop: Remove telephony.rilV7NeedCDMALTEPhone

With this build.prop entry, when booted with a GSM SIM card, the
phone fails to identify the GSM carrier correctly and disables
the APN networks menu in Settings.

After removing this setting, the phone boots and works automatically
for T-Mobile (and likely many more GSM services).

Change-Id: I6c92f0c87091fc7a3aeb59f3469929987e3693a8

Conflicts:

	system.prop