diff --git a/filter/urltolink/tests/filter_test.php b/filter/urltolink/tests/filter_test.php
index 2a3842ca2d6..58bd4a3528d 100644
--- a/filter/urltolink/tests/filter_test.php
+++ b/filter/urltolink/tests/filter_test.php
@@ -31,19 +31,6 @@ require_once($CFG->dirroot . '/filter/urltolink/filter.php'); // Include the cod
 
 class filter_urltolink_testcase extends basic_testcase {
 
-    /**
-     * Helper function that represents the legacy implementation
-     * of convert_urls_into_links()
-     */
-    protected function old_convert_urls_into_links(&$text) {
-        /// Make lone URLs into links.   eg http://moodle.com/
-        $text = preg_replace("%([[:space:]]|^|\(|\[)([[:alnum:]]+)://([^[:space:]]*)([[:alnum:]#?/&=])%i",
-            '$1<a href="$2://$3$4" target="_blank">$2://$3$4</a>', $text);
-        /// eg www.moodle.com
-        $text = preg_replace("%([[:space:]]|^|\(|\[)www\.([^[:space:]]*)([[:alnum:]#?/&=])%i",
-            '$1<a href="http://www.$2$3" target="_blank">www.$2$3</a>', $text);
-    }
-
     function get_convert_urls_into_links_test_cases() {
         $texts = array (
             //just a url
@@ -186,32 +173,6 @@ class filter_urltolink_testcase extends basic_testcase {
         $this->assertEquals($correctresult, $text);
     }
 
-    function test_convert_urls_into_links_performance() {
-        $testablefilter = new testable_filter_urltolink();
-
-        $reps = 1000;
-        $text = file_get_contents(__DIR__ . '/fixtures/sample.txt');
-        $time_start = microtime(true);
-        for($i=0;$i<$reps;$i++) {
-            $testablefilter->convert_urls_into_links($text);
-        }
-        $time_end = microtime(true);
-        $new_time = $time_end - $time_start;
-
-        $time_start = microtime(true);
-        for($i=0;$i<$reps;$i++) {
-            $this->old_convert_urls_into_links($text);
-        }
-        $time_end = microtime(true);
-        $old_time = $time_end - $time_start;
-
-        $fast_enough = false;
-        if( $new_time < $old_time ) {
-            $fast_enough = true;
-        }
-
-        $this->assertEquals($fast_enough, true, 'Timing test: ' . $new_time . 'secs (new) < ' . $old_time . 'secs (old)');
-    }
 }