[PATCH 21.02] Revert "netifd: update to the latest version"

[Nathan Lutchansky]

On Mon, 26 Jul 2021, Felix Fietkau wrote:
> Fixed the regression in master and 21.02, sorry about the mess.
> For some reason, it did not trigger in my configurations...

FWIW, the current 21.02 branch (55d9c020a1) fixes an outstanding issue for 
me with rc2/3 on my TP-Link EAP225-Outdoor v1 where the WLAN interface 
never got added to the right VLAN on br-lan on boot.  Pretty sure that was 
one of the recent netifd cherry-picks.  -Nathan