tests: Fix copy/paste bug in test framework
tests: Fix copy/paste bug in test framework

Unsupported layers were being erased from the wrong vector

Change-Id: I0fbd4226c6c361e4565e41d703eceef9d41ba46d

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers