Deprecate VNDK-Lite

Android S would not support upgrade from O-MR1 devices, so VNDK Lite
configuration is no more valid. This change removes all VNDK-Lite
related steps and makr BOARD_VNDK_RUNTIME_DISABLE as deprecated
variable.

Bug: 158719241
Test: m -j passed
Change-Id: Ifb355da936933843862426e7ddfce9c7f69cea61
Merged-In: Ifb355da936933843862426e7ddfce9c7f69cea61