dell-laptop: remove duplicate Kconfig entry under drivers/misc

This showed up as an unselectable option when using xconfig and
searching for "dell".  It must been overlooked when dell-laptop
was moved to drivers/platform/x86.

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/misc/Kconfig

@@ -210,19 +210,6 @@ config SGI_GRU_DEBUG
 	This option enables addition debugging code for the SGI GRU driver. If
 	you are unsure, say N.
 
-config DELL_LAPTOP
-	tristate "Dell Laptop Extras (EXPERIMENTAL)"
-	depends on X86
-	depends on DCDBAS
-	depends on EXPERIMENTAL
-	depends on BACKLIGHT_CLASS_DEVICE
-	depends on RFKILL
-	depends on POWER_SUPPLY
-	default n
-	---help---
-	This driver adds support for rfkill and backlight control to Dell
-	laptops.
-
 config ISL29003
 	tristate "Intersil ISL29003 ambient light sensor"
 	depends on I2C && SYSFS