inject.sh: simplify variable init and end message

the modified/not message is pointless, because the
message indicating tarball rebuild will suffice

variable initialisation simplified (global newvar)

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/fw/inject.sh

@@ -12,7 +12,7 @@ ifdtool="elf/coreboot/default/ifdtool"
 checkvars="CONFIG_GBE_BIN_PATH ${checkvarsxbmk-} ${checkvarschk-}"
 
 eval "`newvar archive board boarddir IFD_platform ifdprefix \
-    new_mac tmpromdir tree xchanged $checkvars`"
+    new_mac nuke tmpromdir tree xchanged $checkvars`"
 
 inject()
 {
@@ -24,8 +24,6 @@ inject()
 	archive="$1";
 	new_mac="xx:xx:xx:xx:xx:xx"
 
-	eval "`newvar nuke xchanged`"
-
 	[ $# -gt 1 ] && case "$2" in
 	nuke)
 		new_mac=""
@@ -53,12 +51,6 @@ inject()
 	[ "$xchanged" = "y" ] && \
 		remktar
 
-	if [ "$xchanged" = "y" ]; then
-		printf "\n'%s' was modified\n" "$archive" 1>&2
-	else
-		printf "\n'%s' was NOT modified\n" "$archive" 1>&2
-	fi
-
 	x_ rm -Rf "$tmpromdel"
 }