remove || true on top of visualizerinstaller.cs

com.unity.perception/Editor/Visualizer/PythonForUnityInstaller.cs

-#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX || true
+#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
 using System;
 using UnityEditor;
 using UnityEditor.PackageManager.Requests;
 
 namespace UnityEditor.Perception.Visualizer
 {
-#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
-#endif
-#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
-#endif
         
         internal static void Add()
         {

com.unity.perception/Editor/Visualizer/VisualizerInstaller.cs

-#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX || true
+#if UNITY_EDITOR_WIN || UNITY_EDITOR_OSX
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;