build: Updated BUILD.md for ICD removal/whitespace
build: Updated BUILD.md for ICD removal/whitespace

Change-Id: Iebd6eeadeb31c0947314c388043a21d11a900b26

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