etc: Revert systemd After=multi-user.target addition (fixes #5676)
etc: Revert systemd After=multi-user.target addition (fixes #5676)

This reverts commit 84fe2856591a204fcbba096cd405c9ccaef48c06.

xduugu/syncthing,xduugu/syncthing,syncthing/syncthing,wweich/syncthing,wweich/syncthing,imsodin/syncthing,xduugu/syncthing,AudriusButkevicius/syncthing,syncthing/syncthing,imsodin/syncthing,syncthing/syncthing,AudriusButkevicius/syncthing,imsodin/syncthing,wweich/syncthing,imsodin/syncthing,xduugu/syncthing,AudriusButkevicius/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing,imsodin/syncthing,AudriusButkevicius/syncthing,syncthing/syncthing