Added persistent variables to hook_uninstall().

page_title.install

@@ -37,6 +37,8 @@ function page_title_install() {
  */
 function page_title_uninstall() {
   db_query('DROP TABLE {page_title}');
+  variable_del('page_title_individual');
+  variable_del('page_title_front');
 }
 
 /**