[balsa] Drop unused address_compare()

[Peter Bloomfield <peterb src gnome org>]

commit b2972d05ec6fb9ffe47424bc8e9263c03d13b108
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Tue Jun 4 12:27:29 2019 -0400

    Drop unused address_compare()

 libbalsa/abook-completion.c | 10 ----------
 libbalsa/abook-completion.h |  1 -
 2 files changed, 11 deletions(-)
---
diff --git a/libbalsa/abook-completion.c b/libbalsa/abook-completion.c
index b6475fe32..3d63592f0 100644
--- a/libbalsa/abook-completion.c
+++ b/libbalsa/abook-completion.c
@@ -92,16 +92,6 @@ completion_data_extract(CompletionData * data)
     return data->string;
 }
 
-gint
-address_compare(LibBalsaAddress *a, LibBalsaAddress *b)
-{
-    g_return_val_if_fail(a != NULL, -1);
-    g_return_val_if_fail(b != NULL, 1);
-
-    return g_ascii_strcasecmp(libbalsa_address_get_full_name(a),
-                              libbalsa_address_get_full_name(b));
-}
-
 /*
  * A LibBalsaCompletionStrncmpFunc for matching words instead of the
  * whole string.
diff --git a/libbalsa/abook-completion.h b/libbalsa/abook-completion.h
index 20d0de4d8..dc0169724 100644
--- a/libbalsa/abook-completion.h
+++ b/libbalsa/abook-completion.h
@@ -37,7 +37,6 @@ CompletionData *completion_data_new(InternetAddress * ia,
                                     const gchar * nick_name);
 void completion_data_free(CompletionData * data);
 gchar *completion_data_extract(CompletionData * data);
-gint address_compare(LibBalsaAddress *a, LibBalsaAddress *b);
 gint strncmp_word(const gchar * s1, const gchar * s2, gsize n);
 
 #endif