drm/exynos: remove to use unnecessary MODULE_xxx macro

The exynos_drm_dmabuf.c file doesn't include any module feature and it
isn't built to module.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_dmabuf.c

@@ -279,7 +279,3 @@ struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev,
 
 	return ERR_PTR(ret);
 }
-
-MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
-MODULE_DESCRIPTION("Samsung SoC DRM DMABUF Module");
-MODULE_LICENSE("GPL");