packaging: Don´t print sha256sum as part of sha256sum_from_files()

If you're directly using the output of this function, the info message
will show up as part of the string, and that's not what we want.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tools/packaging/scripts/lib.sh

@@ -173,7 +173,6 @@ sha256sum_from_files() {
 	files="$(echo $files | tr ' ' '\n' | LC_ALL=C sort -u)"
 	# Concate the files and calculate a hash.
 	shasum="$(cat $files | sha256sum -b)" || true
-	info "shasum of files $shasum"
 	if [ -n "$shasum" ];then
 		# Return only the SHA field.
 		echo $(awk '{ print $1 }' <<< $shasum)