drm/omap: dss: Remove unused omapdss_of_find_connected_device() function

The omapdss_of_find_connected_device() function isn't used anymore,
remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-54-laurent.pinchart@ideasonboard.com

drivers/gpu/drm/omapdrm/dss/Makefile

@@ -2,7 +2,7 @@
 obj-$(CONFIG_OMAP2_DSS_INIT) += omapdss-boot-init.o
 
 obj-$(CONFIG_OMAP_DSS_BASE) += omapdss-base.o
-omapdss-base-y := base.o display.o dss-of.o output.o
+omapdss-base-y := base.o display.o output.o
 
 obj-$(CONFIG_OMAP2_DSS) += omapdss.o
 # Core DSS files

drivers/gpu/drm/omapdrm/dss/dss-of.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
- * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
- */
-
-#include <linux/err.h>
-#include <linux/of.h>
-#include <linux/of_graph.h>
-
-#include "omapdss.h"
-
-struct omap_dss_device *
-omapdss_of_find_connected_device(struct device_node *node, unsigned int port)
-{
-	struct device_node *remote_node;
-	struct omap_dss_device *dssdev;
-
-	remote_node = of_graph_get_remote_node(node, port, 0);
-	if (!remote_node)
-		return NULL;
-
-	dssdev = omapdss_find_device_by_node(remote_node);
-	of_node_put(remote_node);
-
-	return dssdev ? dssdev : ERR_PTR(-EPROBE_DEFER);
-}
-EXPORT_SYMBOL_GPL(omapdss_of_find_connected_device);

drivers/gpu/drm/omapdrm/dss/omapdss.h

@@ -477,9 +477,6 @@ static inline bool omapdss_device_is_enabled(struct omap_dss_device *dssdev)
 	return dssdev->state == OMAP_DSS_DISPLAY_ACTIVE;
 }
 
-struct omap_dss_device *
-omapdss_of_find_connected_device(struct device_node *node, unsigned int port);
-
 enum dss_writeback_channel {
 	DSS_WB_LCD1_MGR =	0,
 	DSS_WB_LCD2_MGR =	1,