Remove systemd integration from nautilus extension (#10082)

As far as I understand ghostty already integrates with systemd nowadays,
and manages its own scopes/cgroups for the application and all tabs. As
such, explicitly moving launching ghostty into a separate systemd scope
from nautilus no longer seems necessary. In any case the scope created
by the nautilus extension quickly goes away, suggesting that Ghostty
moves its processes out of this scope, and the process tree looks just
the same when spawning ghostty directly.

dist/linux/ghostty_nautilus.py

@@ -17,41 +17,13 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from os.path import isdir
-from gi import require_version
-from gi.repository import Nautilus, GObject, Gio, GLib
+from gi.repository import Nautilus, GObject, Gio
 
 
 class OpenInGhosttyAction(GObject.GObject, Nautilus.MenuProvider):
-    def __init__(self):
-        super().__init__()
-        session = Gio.bus_get_sync(Gio.BusType.SESSION, None)
-        self._systemd = None
-        # Check if the this system runs under systemd, per sd_booted(3)
-        if isdir('/run/systemd/system/'):
-            self._systemd = Gio.DBusProxy.new_sync(session,
-                    Gio.DBusProxyFlags.NONE,
-                    None,
-                    "org.freedesktop.systemd1",
-                    "/org/freedesktop/systemd1",
-                    "org.freedesktop.systemd1.Manager", None)
-
     def _open_terminal(self, path):
         cmd = ['ghostty', f'--working-directory={path}', '--gtk-single-instance=false']
-        child = Gio.Subprocess.new(cmd, Gio.SubprocessFlags.NONE)
-        if self._systemd:
-            # Move new terminal into a dedicated systemd scope to make systemd
-            # track the terminal separately; in particular this makes systemd
-            # keep a separate CPU and memory account for the terminal which in turn
-            # ensures that oomd doesn't take nautilus down if a process in
-            # ghostty consumes a lot of memory.
-            pid = int(child.get_identifier())
-            props = [("PIDs", GLib.Variant('au', [pid])),
-                ('CollectMode', GLib.Variant('s', 'inactive-or-failed'))]
-            name = 'app-nautilus-com.mitchellh.ghostty-{}.scope'.format(pid)
-            args = GLib.Variant('(ssa(sv)a(sa(sv)))', (name, 'fail', props, []))
-            self._systemd.call_sync('StartTransientUnit', args,
-                    Gio.DBusCallFlags.NO_AUTO_START, 500, None)
+        Gio.Subprocess.new(cmd, Gio.SubprocessFlags.NONE)
 
     def _menu_item_activated(self, _menu, paths):
         for path in paths: