Remove IRadio 1.6+ check for getSystemSelectionChannels

With this check, older IRadio versions would fail the CTS because they
throw ISE the second time the method is called. Remove the version check
and skip the test if it's not supported.

Test: atest CtsTelephonyTestCases:TelephonyManagerTest
Bug: 234145549
Change-Id: I27f8ecaa2125b078032ced6a0a110bd7f1834631
1 file changed