net: l2: wifi_shell: remove unnecessary include

Since we are using sys_getopt now we do not need to pull unistd.h
for anything amore.
Let's remove it.

Signed-off-by: Alberto Escolar Piedras <[email protected]>

Author: aescolar

subsys/net/l2/wifi/wifi_shell.c

@@ -25,7 +25,6 @@ LOG_MODULE_REGISTER(net_wifi_shell, LOG_LEVEL_INF);
 #include <zephyr/net/net_event.h>
 #include <zephyr/net/wifi_mgmt.h>
 #include <zephyr/net/wifi_utils.h>
-#include <zephyr/posix/unistd.h>
 #include <zephyr/sys/slist.h>
 
 #include "net_shell_private.h"