audit: changed to not inject '-D_GNU_SOURCE' through CPPFLAGS anymore

Note:

This issue was fixed upstream.

security/audit/audit.conf

@@ -12,9 +12,6 @@
 # GNU General Public License can be found in the file COPYING.
 # --- SDE-COPYRIGHT-NOTE-END ---
 
-# to get O_NOFOLLOW defined
-var_append CPPFLAGS ' ' "-D_GNU_SOURCE"
-
 # prelude support
 if pkginstalled libprelude; then
 	pkgprefix -t libprelude
@@ -30,6 +27,5 @@ if pkginstalled openldap; then
 	var_append LDFLAGS ' ' "-L$root$( pkgprefix libdir openldap )"
 fi
 
-var_insert configprefix ' ' "CPPFLAGS=\"$CPPFLAGS\""
 var_insert configprefix ' ' "CFLAGS=\"$CFLAGS\""
 var_insert configprefix ' ' "LDFLAGS=\"$LDFLAGS\""