Fix regression of reco test jobs

Tracker/TrackerRecAlgs/TrackerPrepRawDataFormation/python/TrackerPrepRawDataFormationConfig.py

@@ -36,7 +36,7 @@ def FaserSCT_ClusterizationToolCfg(flags, name="FaserSCT_ClusterizationTool", **
 def FaserSCT_ClusterizationBasicCfg(flags, **kwargs):
     """Return ComponentAccumulator for FaserSCT Clusterization"""
     acc = ComponentAccumulator()
-    pattern = kwargs.pop("ClusterToolTimingPattern")
+    pattern = kwargs.pop("ClusterToolTimingPattern","")
     # print("ClusterToolTimingPattern = ", pattern)
     if len(pattern) > 0 :
         clusterTool = acc.popToolsAndMerge(FaserSCT_ClusterizationToolCfg(flags, timeBins = pattern ))