kbuild: drop debugging leftover in tags.sh

Noticed by Jike.

Reported-by: "Jike Song" <albcamus@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/tags.sh b/scripts/tags.sh
index 4e75472..9e3451d 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -84,7 +84,6 @@
 
 exuberant()
 {
-	all_sources > all
 	all_sources | xargs $1 -a                               \
 	-I __initdata,__exitdata,__acquires,__releases          \
 	-I __read_mostly,____cacheline_aligned                  \