do not force LFS for Blackfin systems

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

extra/Configs/Config.bfin

@@ -12,7 +12,6 @@ config FORCE_OPTIONS_FOR_ARCH
 	default y
 	select ARCH_LITTLE_ENDIAN
 	select ARCH_HAS_NO_MMU
-	select UCLIBC_HAS_LFS
 
 config ARCH_CFLAGS
 	string