Do not test if ro.vndk.version is not empty

One of the test in vts_treble_platform_version_test checks if VNDK
version is specified from the device. However, this is no longer
mandatory because the property won't be set if VNDK is deprecated. This
change updates test to skip ro.vndk.version property check from the
device.

Bug: 311483845
Bug: 323082943
Test: vts_treble_platform_version_test passed from cheetah
Merged-In: Icb155191cf9f485824b77976010d02c4f5b2ec11
Change-Id: Icb155191cf9f485824b77976010d02c4f5b2ec11
1 file changed