[PATCH v3 43/68] selftests/pid_namespace: Drop define _GNU_SOURCE

_GNU_SOURCE is provided by lib.mk, so it should be dropped to prevent
redefinition warnings.

Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX")
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Muhammad Usama Anjum <redacted>
Signed-off-by: Edward Liaw <redacted>
---
 tools/testing/selftests/pid_namespace/regression_enomem.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tools/testing/selftests/pid_namespace/regression_enomem.c b/tools/testing/selftests/pid_namespace/regression_enomem.c
index 7d84097ad45c..54dc8f16d92a 100644
--- a/tools/testing/selftests/pid_namespace/regression_enomem.c
+++ b/tools/testing/selftests/pid_namespace/regression_enomem.c

@@ -1,4 +1,3 @@
-#define _GNU_SOURCE
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>

-- 
2.45.0.118.g7fe29c98d7-goog