Fix Vulkan dEQP level test

The test that checks for an appropriate value of the
android.software.deqp.level feature flag was incorrectly assuming that
the device declared the Vulkan hardware version feature.  This change
causes the test to trivially pass if this feature is not present
(i.e., if the device does not support Vulkan).

Bug: 159415713
Change-Id: I8234433ea6e42a471c4b9b2ecbda53eca38056ca
1 file changed