arch: remove incorrect condition for endian definition on SuperH

Probably due to some copy/paste mistake, Config.in.sh was defining
BR2_ENDIAN to "LITTLE" when the architecture is BR2_x86_64. Due to the
fact that Config.in.sh is never included when we are building for
x86_64, this is a no-op, but is certainly good to clean up.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

arch/Config.in.sh

@@ -36,6 +36,6 @@ config BR2_ARCH
 
 config BR2_ENDIAN
 	default "LITTLE"	if BR2_sh3 || BR2_sh4 || BR2_sh4a || \
-				   BR2_x86_64 || BR2_sh64
+				   BR2_sh64
 	default "BIG"		if BR2_sh2 || BR2_sh2a || BR2_sh3eb || \
 				   BR2_sh4eb || BR2_sh4aeb