Update Policies to conditionally compile their analytics method. (#5171)

com.unity.ml-agents/Runtime/Policies/BarracudaPolicy.cs

 using Unity.Barracuda;
 using System.Collections.Generic;
+using System.Diagnostics;
 using Unity.MLAgents.Actuators;
 using Unity.MLAgents.Inference;
 using Unity.MLAgents.Sensors;
         /// </summary>
         private bool m_AnalyticsSent;
 
-        /// <inheritdoc />
+        /// <summary>
+        /// Instantiate a BarracudaPolicy with the necessary objects for it to run.
+        /// </summary>
+        /// <param name="actionSpec">The action spec of the behavior.</param>
+        /// <param name="actuators">The actuators used for this behavior.</param>
+        /// <param name="model">The Neural Network to use.</param>
+        /// <param name="inferenceDevice">Which device Barracuda will run on.</param>
+        /// <param name="behaviorName">The name of the behavior.</param>
         public BarracudaPolicy(
             ActionSpec actionSpec,
             IList<IActuator> actuators,
         /// <inheritdoc />
         public void RequestDecision(AgentInfo info, List<ISensor> sensors)
         {
+            SendAnalytics(sensors);
+            m_AgentId = info.episodeId;
+            m_ModelRunner?.PutObservations(info, sensors);
+        }
+
+        [Conditional("MLA_UNITY_ANALYTICS_MODULE")]
+        void SendAnalytics(IList<ISensor> sensors)
+        {
             if (!m_AnalyticsSent)
             {
                 m_AnalyticsSent = true;
                     m_Actuators
                 );
             }
-            m_AgentId = info.episodeId;
-            m_ModelRunner?.PutObservations(info, sensors);
         }
 
         /// <inheritdoc />

com.unity.ml-agents/Runtime/Policies/RemotePolicy.cs

-
+using System.Diagnostics;
 using Unity.MLAgents.Actuators;
 using Unity.MLAgents.Sensors;
 using Unity.MLAgents.Analytics;
         string m_FullyQualifiedBehaviorName;
         ActionSpec m_ActionSpec;
         ActionBuffers m_LastActionBuffer;
-        private bool m_AnalyticsSent = false;
+        bool m_AnalyticsSent;
 
         internal ICommunicator m_Communicator;
 
         /// <inheritdoc />
         public void RequestDecision(AgentInfo info, List<ISensor> sensors)
         {
+            SendAnalytics(sensors);
+            m_AgentId = info.episodeId;
+            m_Communicator?.PutObservations(m_FullyQualifiedBehaviorName, info, sensors);
+        }
+
+        [Conditional("MLA_UNITY_ANALYTICS_MODULE")]
+        void SendAnalytics(IList<ISensor> sensors)
+        {
             if (!m_AnalyticsSent)
             {
                 m_AnalyticsSent = true;
                     m_Actuators
                 );
             }
-            m_AgentId = info.episodeId;
-            m_Communicator?.PutObservations(m_FullyQualifiedBehaviorName, info, sensors);
         }
 
         /// <inheritdoc />