Commit fee49159 introduced the net_radio_prop and system_radio_prop
properties, and added allow rules for backwards compatibility. In
addition, auditallow rules were added to see if the allow rules were
necessary.

The auditallow rules for radio net_radio_prop are triggering, so it's
clear these properties are being set by the radio process. Drop the
auditallow statement.

Test: policy compiles.
Change-Id: I7fa6df18ed4dd4cb8e0c9098373cc28134615330