MDL-19792 Migrated calls to print_heading

blog/index.php

@@ -145,7 +145,7 @@ if (!empty($user)) {
 
     if ($user->deleted) {
         print_header();
-        print_heading(get_string('userdeleted'));
+        echo $OUTPUT->heading(get_string('userdeleted'));
         print_footer();
         die;
     }

blog/preferences.php

@@ -47,7 +47,7 @@
     $navigation = build_navigation($navlinks);
 
     print_header("$site->shortname: $strblogs : $strpreferences", $strblogs, $navigation);
-    print_heading($strpreferences);
+    echo $OUTPUT->heading($strpreferences);
 
     print_simple_box_start('center', '', '');
     require('./preferences.html');