m7vzw: remove unneeded entries from system.prop

ro.telephony.call_ring.multiple is already in m7-common
keyguard.no_require_sim is already in full_base_telephony
telephony.sms.pseudo_multipart is handled in overlays
persist.eons.enabled is Sprint specific
ro.telephony.ril.v3=forceCdmaLteNetworkType should only be
 needed by Sprint CM

Not needed in AOSP RIL:
persist.rild.nitz_*
persist.data_netmgrd_nint
ro.ril.transmitpower
persist.radio.no_wait_for_card
ro.ril.wp.feature
persist.radio.add_power_save
persist.radio.snapshot_enabled
persist.radio.snapshot_timer
persist.radio.apm_sim_not_pwdn

Change-Id: Icaba20e1498755881f6b4409c5170b199d0bdecd