diff --git a/lib/dml/sqlite3_pdo_moodle_database.php b/lib/dml/sqlite3_pdo_moodle_database.php
index 921267afaf2..e3821cc723c 100644
--- a/lib/dml/sqlite3_pdo_moodle_database.php
+++ b/lib/dml/sqlite3_pdo_moodle_database.php
@@ -368,16 +368,4 @@ class sqlite3_pdo_moodle_database extends pdo_moodle_database {
     public function sql_bitxor($int1, $int2) {
         return '( ~' . $this->sql_bitand($int1, $int2) . ' & ' . $this->sql_bitor($int1, $int2) . ')';
     }
-
-    /**
-     * Returns the SQL text to be used in order to perform one bitwise XOR operation
-     * between 2 integers.
-     *
-     * @param integer int1 first integer in the operation
-     * @param integer int2 second integer in the operation
-     * @return string the piece of SQL code to be used in your statement.
-     */
-    public function sql_bitxor($int1, $int2) {
-        return '( ~' . $this->sql_bitand($int1, $int2) . ' & ' . $this->sql_bitor($int1, $int2) . ')';
-    }
 }