*: rename ATTRIBUTE_XXX to just XXX.

diff --git a/coreutils/cat.c b/coreutils/cat.c
index 989147b..0024eb8 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -40,7 +40,7 @@
 }
 
 int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int cat_main(int argc ATTRIBUTE_UNUSED, char **argv)
+int cat_main(int argc UNUSED_PARAM, char **argv)
 {
 	getopt32(argv, "u");
 	argv += optind;