loader: Remove dead code from loader gen script
loader: Remove dead code from loader gen script

Change-Id: Ie6ad81c1f0097b93c3006a737d57a69d81ee70e8

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