layers: Remove obsolete error check from CV
layers: Remove obsolete error check from CV

Bad shader capability check is now in the spirv validator.

Change-Id: I3d96f935d0adb7081d6693cfc004ba215391054e

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools