remove unused post process added in vr helper when teleportation is enabled

src/Cameras/VR/babylon.vrExperienceHelper.ts

@@ -120,7 +120,6 @@ module BABYLON {
         private _teleportationTarget: Mesh;
         private _isDefaultTeleportationTarget = true;
         private _postProcessMove: ImageProcessingPostProcess;
-        private _passProcessMove: PassPostProcess;
         private _teleportationFillColor: string = "#444444";
         private _teleportationBorderColor: string = "#FFFFFF";
         private _rotationAngle: number = 0;
@@ -801,7 +800,6 @@ module BABYLON {
                     imageProcessingConfiguration);
 
                 this._webVRCamera.detachPostProcess(this._postProcessMove)
-                this._passProcessMove = new PassPostProcess("pass", 1.0, this._webVRCamera);
                 this._teleportationInitialized = true;
                 if (this._isDefaultTeleportationTarget) {
                     this._createTeleportationCircles();
@@ -1596,10 +1594,6 @@ module BABYLON {
                 this.exitVR();
             }
 
-            if (this._passProcessMove) {
-                this._passProcessMove.dispose();
-            }
-
             if (this._postProcessMove) {
                 this._postProcessMove.dispose();
             }