Remove extra typedefs since they do not seem to be needed anymore

These typedefs were causing build issues with new kernel/C library headers,
so lets get rid of them since they do not seem to be needed anymore. This
applies only if CONFIG_FULL_DYNAMIC_VLAN is enabled which is not even
mentioned in the defconfig file, so this should not change behavior more
most users.

hostapd/vlan_init.c

@@ -26,12 +26,6 @@
 #include <sys/ioctl.h>
 #include <linux/sockios.h>
 #include <linux/if_vlan.h>
-typedef __uint64_t __u64;
-typedef __uint32_t __u32;
-typedef __int32_t __s32;
-typedef __uint16_t __u16;
-typedef __int16_t __s16;
-typedef __uint8_t __u8;
 #include <linux/if_bridge.h>
 
 #include "priv_netlink.h"