git.sh: hide e() output on for loop

this for loop is a hack to make sure that all the
sources get nuked (using nuke.list files).

hide the messages so that they do not appear when
running just any command in the trees script.

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

include/git.sh

@@ -66,7 +66,8 @@ fetch_project_repo()
 	clone_project
 
 	for x in config/git/*; do
-		[ -f "$x" ] && nuke "${x##*/}" "src/${x##*/}"; continue
+		[ -f "$x" ] && nuke "${x##*/}" "src/${x##*/}" 2>/dev/null; \
+		    continue
 	done
 }