unneeded lines in civicrm.php for Joomla

in civicrm.php in the front end of joomla lines 63-69 are no longer needed in Joomla 1.5.

if ( ! empty( $_POST ) ) {
if ( count( $_SESSION ) <= 1 )

{ $message = 'CiviCRM requires session support for Joomla front-end pages. Please modify index.php in the root folder of your front-end Joomla site <a href="http://wiki.civicrm.org/confluence/display/CRMDOC/Configuring+Front-end+Profile+Listings+and+Forms+in+Joomla%21+Sites">as described in the step 3 of this CiviCRM documentation page</a>.'; CRM_Core_Error::fatal( $message ); }

}