Revert of Make VR screen tap tests more stable

chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/OnDispatchTouchEventCallback.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/OnDispatchTouchEventCallback.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/OnDispatchTouchEventCallback.java b/chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/OnDispatchTouchEventCallback.java
deleted file mode 100644
index c45a2acebafb832f63ab4743aef38698e18644b4..0000000000000000000000000000000000000000
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/OnDispatchTouchEventCallback.java
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.chrome.browser.vr_shell;
-
-/**
- * Callback used to execute code additional test code after VrShellImpl's
- * dispatchTouchEvent() runs.
- */
-public interface OnDispatchTouchEventCallback {
-    /**
-     * Runs some code that may need to know if the event was consumed
-     * by the parent and if a cardboard event was triggered.
-     */
-    void onDispatchTouchEvent(boolean parentConsumed, boolean cardboardTriggered);
-}