Added UNITY_EDITOR #if's to fix ps4 build

Assets/ScriptableRenderLoop/HDRenderPipeline/HDRenderPipeline.cs

 using UnityEngine.Rendering;
 using System.Collections.Generic;
 using System;
+#if UNITY_EDITOR
+#endif
 
 namespace UnityEngine.Experimental.Rendering.HDPipeline
 {

Assets/ScriptableRenderLoop/HDRenderPipeline/HDRenderPipelineSetup.cs

 using System;
 using System.Collections.Generic;
-using UnityEditor;
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
 
 namespace UnityEngine.Experimental.Rendering.HDPipeline
 {

Assets/ScriptableRenderLoop/HDRenderPipeline/Lighting/TilePass/TilePass.cs

 using UnityEngine.Rendering;
 using System.Collections.Generic;
 using System;
+#if UNITY_EDITOR
+#endif
 
 namespace UnityEngine.Experimental.Rendering.HDPipeline
 {