Create a function to remove the registered preference

call backs setup in gnc-prefs-utils.c

libgnucash/app-utils/gnc-prefs-utils.c

@@ -124,3 +124,19 @@ void gnc_prefs_init (void)
                            file_compression_changed_cb, NULL);
 
 }
+
+void
+gnc_prefs_remove_registered (void)
+{
+    // remove the registered pref call backs above
+    gnc_prefs_remove_cb_by_func (GNC_PREFS_GROUP_GENERAL, GNC_PREF_RETAIN_DAYS,
+                           file_retain_changed_cb, NULL);
+    gnc_prefs_remove_cb_by_func (GNC_PREFS_GROUP_GENERAL, GNC_PREF_RETAIN_TYPE_NEVER,
+                           file_retain_type_changed_cb, NULL);
+    gnc_prefs_remove_cb_by_func (GNC_PREFS_GROUP_GENERAL, GNC_PREF_RETAIN_TYPE_DAYS,
+                           file_retain_type_changed_cb, NULL);
+    gnc_prefs_remove_cb_by_func (GNC_PREFS_GROUP_GENERAL, GNC_PREF_RETAIN_TYPE_FOREVER,
+                           file_retain_type_changed_cb, NULL);
+    gnc_prefs_remove_cb_by_func (GNC_PREFS_GROUP_GENERAL, GNC_PREF_FILE_COMPRESSION,
+                           file_compression_changed_cb, NULL);
+}

libgnucash/app-utils/gnc-prefs-utils.h

@@ -47,6 +47,11 @@
  */
 void gnc_prefs_init (void);
 
+/** This function is called to remove the registered preference
+ *  call backs setup in this file
+ */
+void gnc_prefs_remove_registered (void);
+
 #endif /* GNC_PREFS_UTILS_H_ */
 /** @} */
 /** @} */