[Wifi] Completely retire Wifi solution with hostapd running inside
the guest.

Since we have already enabled the VirtioWifi solution in API 31
and above by default.

Bug: 202191280

Signed-off-by: Weilun Du <wdu@google.com>
Change-Id: I957187f47a00b4b95cf4f10fac1492abdf1b363c
Merged-In: I957187f47a00b4b95cf4f10fac1492abdf1b363c
78 files changed