layers: Kill redundant DRAWSTATE_PUSH_CONSTANTS_ERROR case
layers: Kill redundant DRAWSTATE_PUSH_CONSTANTS_ERROR case

This check was really an INVALID_PIPELINE check that is already
handled by object_tracker so killing it in core_validation.

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