SMTP :: booleandelcc ( [ string address ] )
Returns TRUE if has been successfully deleted, FALSE if not.
string address default value are: all
string address possible values are: all, user@hostname address format
Example:
$mail = new SMTP;
$mail->AddCc('user@domain.net');
// delete only user@domain.net from Cc
$mail->DelCc('user@domain.net');
// also, you can delete all Cc addresses
$mail->DelCc();