tools: ynl: Remove duplicated include in handshake-user.c

./tools/net/ynl/generated/handshake-user.c: stdlib.h is included more than once.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5464Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/net/ynl/generated/handshake-user.c

@@ -8,7 +8,6 @@
 #include "ynl.h"
 #include <linux/handshake.h>
 
-#include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <libmnl/libmnl.h>