Revert "profile/sway/autostart: use lemurs"

This reverts commit 72cd115d77.

profiles/sway/autostart.nix

@@ -8,9 +8,12 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    services.displayManager.lemurs = {
-      enable = true;
-      settings.environment_switcher.include_tty_shell = true;
-    };
+
+    # start sway if login happens
+    environment.interactiveShellInit = ''
+      if test `tty` = /dev/tty1; then
+        exec sway
+      fi
+    '';
   };
 }