Blacklist =SWAYSOCK= env?

There are more envs would become obsoleted if they been persisted IMO.

"^WAYLAND_DISPLAY" "^SWAYSOCK" "^SEATD_SOCK" "^GREETD_SOCK" "^I3SOCK"
"^XDG_SESSION_CLASS" "^XDG_CURRENT_DESKTOP" "^XDG_SEAT" "^XDG_RUNTIME_DIR"
"^XDG_VTNR"