sctp: Remove unused payload from sctp_idatahdrRemove the unused payload array from the struct sctp_idatahdr.Cc: Kees Cook <kees@kernel.org>Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>Link: https://patch.msgid.link/20250223204505.2499-3-thorsten.blum@linux.devSigned-off-by: Paolo Abeni <pabeni@redhat.com>