greeter: don't use a session lock

DMSGreeter.qml

@@ -1,29 +1,11 @@
 import QtQuick
 import Quickshell
-import Quickshell.Wayland
 import Quickshell.Services.Greetd
 import qs.Common
 import qs.Modules.Greetd
 
-Item {
+Scope {
     id: root
 
-    WlSessionLock {
-        id: sessionLock
-        locked: false
-
-        Component.onCompleted: {
-            Qt.callLater(() => { locked = true })
-        }
-
-        onLockedChanged: {
-            if (!locked) {
-                console.log("Greetd session unlocked, exiting")
-            }
-        }
-
-        GreeterSurface {
-            lock: sessionLock
-        }
-    }
+    GreeterSurface {}
 }