qemu/Makefile cleanup

qemu/Makefile

@@ -64,27 +64,7 @@ endif
 -include $(SUBDIR_DEVICES_MAK_DEP)
 
 %/config-devices.mak: default-configs/%.mak
-	$(call quiet-command,$(SHELL) $(SRC_PATH)/scripts/make_device_config.sh $@ $<, "  GEN   $@")
-	@if test -f $@; then \
-	  if cmp -s $@.old $@; then \
-	    mv $@.tmp $@; \
-	    cp -p $@ $@.old; \
-	  else \
-	    if test -f $@.old; then \
-	      echo "WARNING: $@ (user modified) out of date.";\
-	    else \
-	      echo "WARNING: $@ out of date.";\
-	    fi; \
-	    echo "Run \"make defconfig\" to regenerate."; \
-	    rm $@.tmp; \
-	  fi; \
-	 else \
-	  mv $@.tmp $@; \
-	  cp -p $@ $@.old; \
-	 fi
-
-defconfig:
-	rm -f config-all-devices.mak $(SUBDIR_DEVICES_MAK)
+	$(call quiet-command, cp $< $@, "  GEN   $@")
 
 ifneq ($(wildcard config-host.mak),)
 include $(SRC_PATH)/Makefile.objs