drm/tidss: Delete tidss->saved_state

Not used anymore since the switch to suspend/resume helpers.
Tested-by: NJyri Sarha <jsarha@ti.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200415074034.175360-26-daniel.vetter@ffwll.ch

drivers/gpu/drm/tidss/tidss_drv.h

@@ -29,8 +29,6 @@ struct tidss_device {
 
 	spinlock_t wait_lock;	/* protects the irq masks */
 	dispc_irq_t irq_mask;	/* enabled irqs in addition to wait_list */
-
-	struct drm_atomic_state *saved_state;
 };
 
 #define to_tidss(__dev) container_of(__dev, struct tidss_device, ddev)