platform/x86/dell: Kconfig: Remove unnecessary "depends on X86_PLATFORM_DEVICES"

platform/x86/dell/Kconfig is only sourced if X86_PLATFORM_DEVICES is set,
so it does not need to depend on it.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220620145628.5882-3-hdegoede@redhat.com

drivers/platform/x86/dell/Kconfig

@@ -5,7 +5,6 @@
 
 menuconfig X86_PLATFORM_DRIVERS_DELL
 	bool "Dell X86 Platform Specific Device Drivers"
-	depends on X86_PLATFORM_DEVICES
 	help
 	  Say Y here to get to see options for device drivers for various
 	  Dell x86 platforms, including vendor-specific laptop extension drivers.