Remove DAB selector secondary ids check in service

Secondary ids for DAB selector, ensemble and frequency are not
mandatory, so the check for this is removed for better flexibilty
in tuning operation.

Bug: 273804622
Test: atest com.android.server.broadcastradio
Test: atest android.hardware.radio
Change-Id: Ic3293c70bd80f6bcefb6cea7c60768a83c5617a4