[PATCH v3 17/68] selftests/filelock: 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")
Signed-off-by: Edward Liaw <redacted>
---
 tools/testing/selftests/filelock/ofdlocks.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/testing/selftests/filelock/ofdlocks.c b/tools/testing/selftests/filelock/ofdlocks.c
index a55b79810ab2..301c63ddcceb 100644
--- a/tools/testing/selftests/filelock/ofdlocks.c
+++ b/tools/testing/selftests/filelock/ofdlocks.c

@@ -1,6 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0
-
-#define _GNU_SOURCE
 #include <fcntl.h>
 #include <assert.h>
 #include <stdio.h>

-- 
2.45.0.118.g7fe29c98d7-goog