[AVR32] remove UID16 option

avr32 already sees the option from init/Kconfig.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

arch/avr32/Kconfig

@@ -19,9 +19,6 @@ config AVR32
 	  There is an AVR32 Linux project with a web page at
 	  http://avr32linux.org/.
 
-config UID16
-	bool
-
 config GENERIC_GPIO
 	bool
 	default y