diff --git a/datamodels/2.x/itop-request-mgmt-itil/main.itop-request-mgmt-itil.php b/datamodels/2.x/itop-request-mgmt-itil/main.itop-request-mgmt-itil.php
index 600c3aa5b4..19b95387b9 100755
--- a/datamodels/2.x/itop-request-mgmt-itil/main.itop-request-mgmt-itil.php
+++ b/datamodels/2.x/itop-request-mgmt-itil/main.itop-request-mgmt-itil.php
@@ -15,110 +15,6 @@
 //   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
-/**
- * Base class for computing TTO or TTR on a ticket
- */ 
-class ResponseTicketSLT
-{
-	/**
-	 * Determines the shortest SLT, for this ticket, for the given metric. Returns null is no SLT was found
-	 * @param string $sMetric Type of metric 'TTO', 'TTR', etc as defined in the SLT class
-	 * @return hash Array with 'SLT' => name of the SLT selected, 'value' => duration in seconds of the SLT metric, null if no SLT applies to this ticket
-	 */
-	protected static function ComputeSLT($oTicket, $sMetric = 'TTO')
-	{
-		$iDeadline = null;
-		if (MetaModel::IsValidClass('SLT'))
-		{
-			$sType=get_class($oTicket);
-				
-			//echo "<p>Managing:".$sMetric."-".$this->Get('request_type')."-".$this->Get('importance')."</p>\n";
-			$sOQL = "SELECT SLT AS slt JOIN lnkSLAToSLT AS l1 ON l1.slt_id=slt.id JOIN SLA AS sla ON l1.sla_id=sla.id JOIN lnkCustomerContractToService AS l2 ON l2.sla_id=sla.id JOIN CustomerContract AS sc ON l2.customercontract_id=sc.id WHERE slt.metric = :metric AND l2.service_id = :service AND sc.org_id = :customer AND slt.request_type = :request_type AND slt.priority = :priority";
-		
-			$oSLTSet = new DBObjectSet(DBObjectSearch::FromOQL($sOQL),
-						array(),
-						array(
-							'metric' => $sMetric,
-							'service' => $oTicket->Get('service_id'),
-							'customer' => $oTicket->Get('org_id'),
-							'request_type' => $oTicket->Get('request_type'),
-							'priority' => $oTicket->Get('priority'),
-							)
-						);
 
-			$iMinDuration = PHP_INT_MAX;
-			$sSLTName = '';
-	
-			while($oSLT = $oSLTSet->Fetch())
-			{
-				$iDuration = (int)$oSLT->Get('value');
-				$sUnit = $oSLT->Get('unit');
-				switch($sUnit)
-				{
-					case 'days':
-					$iDuration = $iDuration * 24; // 24 hours in 1 days
-					// Fall though
-					
-					case 'hours':
-					$iDuration = $iDuration * 60; // 60 minutes in 1 hour
-					// Fall though
-					
-					case 'minutes':
-					$iDuration = $iDuration * 60;
-				}
-				if ($iDuration < $iMinDuration)
-				{
-					$iMinDuration = $iDuration;
-					$sSLTName = $oSLT->GetName();
-				}
-			}
-			if ($iMinDuration == PHP_INT_MAX)
-			{
-				$iDeadline = null;
-			}
-			else
-			{
-				// Store $sSLTName to keep track of which SLT has been used
-				$iDeadline = $iMinDuration - $oTicket->Get('cumulated_pending_period') - $oTicket->Get('cumulated_resolved_period')  ;
-			}
-		}
-		return $iDeadline;			
 
-	}
-}
-
-/**
- * Compute the TTO of a ticket - null if the class 'SLT' does not exist
- */ 
-class ResponseTicketTTO extends ResponseTicketSLT implements iMetricComputer
-{
-	public static function GetDescription()
-	{
-		return "Time to own a ticket";
-	}
-
-	public function ComputeMetric($oObject)
-	{
-		$iRes = $this->ComputeSLT($oObject, 'TTO');
-		return $iRes;
-	}
-}
-
-/**
- * Compute the TTR of a ticket - null if the class 'SLT' does not exist
- */ 
-class ResponseTicketTTR extends ResponseTicketSLT implements iMetricComputer
-{
-	public static function GetDescription()
-	{
-		return "Time to resolve a ticket";
-	}
-
-	public function ComputeMetric($oObject)
-	{
-		$iRes = $this->ComputeSLT($oObject, 'TTR');
-		return $iRes;
-	}
-}
-
-?>
\ No newline at end of file
+?>