[gnome-applets] cpufreq: fix -Wunused-variable warning

[Alberts Muktupāvels <muktupavels src gnome org>]

commit bdb0bd5fbeecbc919f357ce5854f73e4441fb128
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Apr 3 22:04:59 2020 +0300

    cpufreq: fix -Wunused-variable warning

 gnome-applets/cpufreq/cpufreq-prefs.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/gnome-applets/cpufreq/cpufreq-prefs.c b/gnome-applets/cpufreq/cpufreq-prefs.c
index c51e75bcc..b3198703e 100644
--- a/gnome-applets/cpufreq/cpufreq-prefs.c
+++ b/gnome-applets/cpufreq/cpufreq-prefs.c
@@ -347,8 +347,6 @@ cpufreq_prefs_dialog_response_cb (CPUFreqPrefs *prefs,
                                  gint          response,
                                  GtkDialog    *dialog)
 {
-        GError *error = NULL;
-
         if (response == GTK_RESPONSE_HELP) {
                 gp_applet_show_help (GP_APPLET (prefs->priv->applet),
                                      "cpufreq-applet-prefs");