removed label config setup logic from fixed length scenario

com.unity.perception/Runtime/Randomization/Scenarios/FixedLengthScenario.cs

     [AddComponentMenu("Perception/Scenarios/Fixed Length Scenario")]
     public class FixedLengthScenario: UnitySimulationScenario<FixedLengthScenario.Constants>
     {
-        PerceptionCamera m_PerceptionCamera;
+        protected PerceptionCamera m_PerceptionCamera;
 
         /// <summary>
         /// Constants describing the execution of this scenario
             if (m_PerceptionCamera && currentIterationFrame == constants.framesPerIteration - 1
             && currentIteration > 1)
             {
-                //skip first iteration for capturing because labelers are not yet initialized. They are currently initialized at the end of the first iteration.
-                //TO DO: Make scheduling more robust in order to capture first iteration too
-        }
-
-        protected override void OnIterationEnd()
-        {
-            if (currentIteration == constants.instanceCount + 1)
-            {
-                //it is the penultimate frame of the first iteration, so all placement randomizers have woken up and labeled their prefabs by now
-                SetupLabelConfigs();
-            }
-        }
-
-        static void SetupLabelConfigs()
-        {
-            var perceptionCamera = FindObjectOfType<PerceptionCamera>();
-
-            var idLabelConfig = ScriptableObject.CreateInstance<IdLabelConfig>();
-
-            idLabelConfig.autoAssignIds = true;
-            idLabelConfig.startingLabelId = StartingLabelId.One;
-
-            var stringList = LabelManager.singleton.LabelStringsForAutoLabelConfig;
-
-            var idLabelEntries = new List<IdLabelEntry>();
-            for (var i = 0; i < stringList.Count; i++)
-            {
-                idLabelEntries.Add(new IdLabelEntry
-                {
-                    id = i,
-                    label = stringList[i]
-                });
-            }
-            idLabelConfig.Init(idLabelEntries);
-
-            var semanticLabelConfig = ScriptableObject.CreateInstance<SemanticSegmentationLabelConfig>();
-            var semanticLabelEntries = new List<SemanticSegmentationLabelEntry>();
-            for (var i = 0; i < stringList.Count; i++)
-            {
-                semanticLabelEntries.Add(new SemanticSegmentationLabelEntry()
-                {
-                    label = stringList[i],
-                    color = GetUniqueSemanticSegmentationColor()
-                });
-            }
-            semanticLabelConfig.Init(semanticLabelEntries);
-
-            foreach (var labeler in perceptionCamera.labelers)
-            {
-                if (!labeler.enabled)
-                    continue;
-
-                switch (labeler)
-                {
-                    case BoundingBox2DLabeler boundingBox2DLabeler:
-                        boundingBox2DLabeler.idLabelConfig = idLabelConfig;
-                        break;
-                    case BoundingBox3DLabeler boundingBox3DLabeler:
-                        boundingBox3DLabeler.idLabelConfig = idLabelConfig;
-                        break;
-                    case ObjectCountLabeler objectCountLabeler:
-                        objectCountLabeler.labelConfig.autoAssignIds = idLabelConfig.autoAssignIds;
-                        objectCountLabeler.labelConfig.startingLabelId = idLabelConfig.startingLabelId;
-                        objectCountLabeler.labelConfig.Init(idLabelEntries);
-                        break;
-                    case RenderedObjectInfoLabeler renderedObjectInfoLabeler:
-                        renderedObjectInfoLabeler.idLabelConfig = idLabelConfig;
-                        break;
-                    case KeypointLabeler keypointLabeler:
-                        keypointLabeler.idLabelConfig = idLabelConfig;
-                        break;
-                    case InstanceSegmentationLabeler instanceSegmentationLabeler:
-                        instanceSegmentationLabeler.idLabelConfig = idLabelConfig;
-                        break;
-                    case SemanticSegmentationLabeler semanticSegmentationLabeler:
-                        semanticSegmentationLabeler.labelConfig = semanticLabelConfig;
-                        break;
-                }
-
-                labeler.Init(perceptionCamera);
-            }
-        }
-
-        static HashSet<Color> s_ColorsAlreadyUsed = new HashSet<Color>();
-        static ColorRgbParameter s_SemanticColorParameter = new ColorRgbParameter();
-        static Color GetUniqueSemanticSegmentationColor()
-        {
-            var seed = SamplerState.NextRandomState();
-            var sampledColor = s_SemanticColorParameter.Sample();
-            var maxTries = 1000;
-            var count = 0;
-
-            while (s_ColorsAlreadyUsed.Contains(sampledColor) && count <= maxTries)
-            {
-                count++;
-                sampledColor = s_SemanticColorParameter.Sample();
-                Debug.LogError("Failed to find unique semantic segmentation color for a label.");
-            }
-
-            s_ColorsAlreadyUsed.Add(sampledColor);
-            return sampledColor;
         }
     }
 }