avr32: Remove redundant LDSCRIPT definition

AVR32's LD script uses a standard location that is now automatically detected by
the main Makefile, so its definition in AVR32's config.mk is now obsolete and
redundant.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

arch/avr32/config.mk

@@ -29,5 +29,3 @@ PLATFORM_RELFLAGS	+= -ffixed-r5 -fPIC -mno-init-got -mrelax
 PLATFORM_RELFLAGS	+= -ffunction-sections -fdata-sections
 
 LDFLAGS_u-boot		= --gc-sections --relax
-
-LDSCRIPT			= $(SRCTREE)/$(CPUDIR)/u-boot.lds