mpc83xx: fix ITX[GP] O=builddir builds

make: *** No rule to make target `/work/wd/tmp/board/mpc8349itx/u-boot.lds', needed by `/work/wd/tmp/u-boot'.  Stop.

Both the ITX and ITX-GP fail when you use "make O=<some dir> ..." or
"BUILD_DIR=<some dir> ./MAKEALL ..."

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

board/mpc8349itx/config.mk

@@ -29,9 +29,3 @@ sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
 ifndef TEXT_BASE
 TEXT_BASE  =   0xFEF00000
 endif
-
-ifneq ($(OBJTREE),$(SRCTREE))
-# We are building u-boot in a separate directory, use generated
-# .lds script from OBJTREE directory.
-LDSCRIPT := $(OBJTREE)/board/$(BOARDDIR)/u-boot.lds
-endif