drm: Remove drm_fbdev_cma_set_suspend()

drm_fbdev_cma_set_suspend() is not getting called from
any other places. If there is no plan to use it in future
we can remove this API.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180730192326.GA31354@jordon-HP-15-Notebook-PC

drivers/gpu/drm/drm_fb_cma_helper.c

@@ -218,21 +218,6 @@ void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
 }
 EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
 
-/**
- * drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
- * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
- * @state: desired state, zero to resume, non-zero to suspend
- *
- * Calls drm_fb_helper_set_suspend, which is a wrapper around
- * fb_set_suspend implemented by fbdev core.
- */
-void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state)
-{
-	if (fbdev_cma)
-		drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
-}
-EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
-
 /**
  * drm_fbdev_cma_set_suspend_unlocked - wrapper around
  *                                      drm_fb_helper_set_suspend_unlocked

include/drm/drm_fb_cma_helper.h

@@ -26,7 +26,6 @@ void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
 
 void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
 void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
-void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, bool state);
 void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
 					bool state);