remove dead code

h2/src/test/org/h2/test/bench/Database.java

@@ -172,15 +172,6 @@ class Database {
         }
     }
 
-    /**
-     * Get the database connection. The connection must be opened first.
-     *
-     * @return the connection
-     */
-    Connection getConnection() {
-        return conn;
-    }
-
     /**
      * Open a new database connection. This connection must be closed
      * by calling conn.close().