OMAP: DSS2: Remove unused list

There was an unused list defined in display.c. Remove it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/display.c

@@ -25,14 +25,11 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/jiffies.h>
-#include <linux/list.h>
 #include <linux/platform_device.h>
 
 #include <plat/display.h>
 #include "dss.h"
 
-static LIST_HEAD(display_list);
-
 static ssize_t display_enabled_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {