drm/exynos/decon5433: remove duplicated initialization

Field .commit is already initialized few lines above.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos5433_drm_decon.c

@@ -448,7 +448,6 @@ static struct exynos_drm_crtc_ops decon_crtc_ops = {
 	.commit			= decon_commit,
 	.enable_vblank		= decon_enable_vblank,
 	.disable_vblank		= decon_disable_vblank,
-	.commit			= decon_commit,
 	.atomic_begin		= decon_atomic_begin,
 	.update_plane		= decon_update_plane,
 	.disable_plane		= decon_disable_plane,