Remove code comments in the exception classes. Descriptions will be added again later with proper documentation.

lib/Predis/ProtocolException.php

@@ -2,12 +2,5 @@
 
 namespace Predis;
 
-use Predis\Network\IConnectionSingle;
-
 class ProtocolException extends CommunicationException {
-    // Unexpected responses
-
-    public function __construct(IConnectionSingle $connection, $message = null) {
-        parent::__construct($connection, $message);
-    }
 }