[PATCH] bpf, lsm: Remove bpf_lsm_key_free hook

[Thomas Weißschuh <linux@xxxxxxxxxxxxxx>]

The key_free LSM hook has been removed.
Remove the corresponding BPF hook.

Avoid warnings during the build:
  BTFIDS  vmlinux
WARN: resolve_btfids: unresolved symbol bpf_lsm_key_free

Fixes: 5f8d28f6d7d5 ("lsm: infrastructure management of the key security blob")
Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
---
I don't know much about LSMs, so please disregard if this is wrong.
---
 kernel/bpf/bpf_lsm.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
index 6292ac5f9bd139dafb39ecd8bb180be46cd7c7fd..3bc61628ab251e05d7837eb27dabc3b62bcc4783 100644
--- a/kernel/bpf/bpf_lsm.c
+++ b/kernel/bpf/bpf_lsm.c
@@ -339,10 +339,6 @@ BTF_ID(func, bpf_lsm_path_chmod)
 BTF_ID(func, bpf_lsm_path_chown)
 #endif /* CONFIG_SECURITY_PATH */
 
-#ifdef CONFIG_KEYS
-BTF_ID(func, bpf_lsm_key_free)
-#endif /* CONFIG_KEYS */
-
 BTF_ID(func, bpf_lsm_mmap_file)
 BTF_ID(func, bpf_lsm_netlink_send)
 BTF_ID(func, bpf_lsm_path_notify)

---
base-commit: 0c559323bbaabee7346c12e74b497e283aaafef5
change-id: 20241005-lsm-key_free-b47445ee523d

Best regards,
-- 
Thomas Weißschuh <linux@xxxxxxxxxxxxxx>