Revert "NavMeshSurfaces are now responsible for displaying their debug...

Revert "NavMeshSurfaces are now responsible for displaying their debug representation in the Editor."

This reverts commit 3f4bad4e.

Assets/NavMeshComponents/Editor/NavMeshSurfaceEditor.cs

@@ -383,8 +383,6 @@ static void UpdateAsyncBuildOperations()
         static void RenderBoxGizmoSelected(NavMeshSurface navSurface, GizmoType gizmoType)
         {
             RenderBoxGizmo(navSurface, gizmoType, true);
-
-            navSurface.DrawGizmo();
         }
 
         [DrawGizmo(GizmoType.NotInSelectionHierarchy | GizmoType.Pickable)]

Assets/NavMeshComponents/Scripts/NavMeshSurface.cs

 using System.Collections.Generic;
-using UnityEditor.AI;
 
 namespace UnityEngine.AI
 {
@@ -422,14 +421,6 @@ void OnValidate()
                     m_TileSize = kMaxTileSize;
             }
         }
-
-        public void DrawGizmo()
-        {
-            if (m_NavMeshDataInstance.valid)
-            {
-                NavMeshEditorHelpers.DrawSurface(m_NavMeshDataInstance);
-            }
-        }
 #endif
     }
 }