[gnome-builder/wip/gtk4-port: 961/1774] trivial: Remove unused variable

[Christian Hergert <chergert src gnome org>]

commit 555698bceff9902b1b25fddb31eab83094669af6
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat May 7 16:42:45 2022 -0300

    trivial: Remove unused variable

 src/libide/gui/ide-preferences-window.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/libide/gui/ide-preferences-window.c b/src/libide/gui/ide-preferences-window.c
index 36acecdf9..f9d0bea6b 100644
--- a/src/libide/gui/ide-preferences-window.c
+++ b/src/libide/gui/ide-preferences-window.c
@@ -1419,7 +1419,6 @@ ide_preferences_window_spin (const char                   *page_name,
   IdePreferencesWindow *self = user_data;
   g_autofree char *title_esc = NULL;
   g_autofree char *subtitle_esc = NULL;
-  g_autoptr(GError) error = NULL;
   GtkAdjustment *adj = NULL;
   AdwActionRow *row;
   GtkWidget *child;