Add Sim absent assertion in the 1.0 setup

Currently the VTS tests for radio are for Sim Absent only. Adding this
assertion in the set up before running VTS tests clarifies the current
tests running is for sim absent only.

Test: run vts
Bug: 63898623
Change-Id: Ie09fb8bcedfd0b35b14f0a70952f44b6f6b082aa