vboot: remove remnants of VBOOT_STUB

For vboot1 there was an rmodule that was loaded and ran to
do the firmware verification. That's no longer used so remove
the last vestiges of VBOOT_STUB.

BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built glados.

Change-Id: I6b41544874bef4d84d0f548640114285cad3474e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11817
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/Makefile.inc b/Makefile.inc
index 017addc..d84bf19 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -615,7 +615,7 @@
 	$(RMODTOOL) -i $(CONFIG_REFCODE_BLOB_FILE) -o $@
 endif
 
-$(obj)/coreboot.rom: $(obj)/coreboot.pre $(objcbfs)/ramstage.elf $(CBFSTOOL) $$(call strip_quotes,$$(COREBOOT_ROM_DEPENDENCIES)) $$(INTERMEDIATE) $$(VBOOT_STUB) $(REFCODE_BLOB)
+$(obj)/coreboot.rom: $(obj)/coreboot.pre $(objcbfs)/ramstage.elf $(CBFSTOOL) $$(call strip_quotes,$$(COREBOOT_ROM_DEPENDENCIES)) $$(INTERMEDIATE) $(REFCODE_BLOB)
 	@printf "    CBFS       $(subst $(obj)/,,$(@))\n"
 # The full ROM may be larger than the CBFS part, so create an empty
 # file (filled with \377 = 0xff) and copy the CBFS image over it.