correct condition check in teardown

We skip setup if either mShouldTestTelecom is false
or Telephony feature is not present

The corresponding teardown should only be executed if both
mShouldTestTelecom  is true and device has telephony feature

Bug: 281870126
Test: atest
Change-Id: Ifb139843c234f47c1bbde6c05fe487b229e6d4df