remove patch applied upstream

debian/changelog

@@ -4,8 +4,6 @@ lightdm-gtk-greeter (1.8.1-1) UNRELEASED; urgency=medium
   * debian/patches:
     - 07_fix-NULL-username dropped, included upstream.
     - 04_default-gtk-greeter-config refreshed.
-    - 05_add-enter-shortcut-switch-login-password-fields added back a bit
-      differently, since enter key is broken again.
   * debian/lightdm-xsession.desktop: drop file from source package, it's for
     lightdm actually.
 

debian/patches/05_add-enter-shortcut-switch-login-password-fields.patch

@@ -1,12 +0,0 @@
-=== modified file 'lightdm-gtk-greeter/src/lightdm-gtk-greeter.c'
---- a/src/lightdm-gtk-greeter.c
-+++ b/src/lightdm-gtk-greeter.c
-@@ -1154,6 +1154,8 @@ username_key_press_cb (GtkWidget *widget
-     /* Acts as password_entry */
-     if (event->keyval == GDK_KEY_Up)
-         return password_key_press_cb (widget, event, user_data);
-+    else if(event->keyval == GDK_KEY_Return)
-+        gtk_widget_grab_focus(GTK_WIDGET(password_entry));
-     else
-         return FALSE;
- }

debian/patches/series

@@ -1,2 +1 @@
 04_default-gtk-greeter-config.patch
-05_add-enter-shortcut-switch-login-password-fields.patch