ui: Cleanup class/struct forward declarations

ui/android/java/res/layout/two_field_date_picker.xml

Index: ui/android/java/res/layout/two_field_date_picker.xml
diff --git a/ui/android/java/res/layout/two_field_date_picker.xml b/ui/android/java/res/layout/two_field_date_picker.xml
deleted file mode 100644
index a37960ed2e8a2a2b08ba663fea16eadebf6cc498..0000000000000000000000000000000000000000
--- a/ui/android/java/res/layout/two_field_date_picker.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright 2013 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. -->
-
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/pickers"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:gravity="center"
-    android:orientation="horizontal" >
-
-    <!-- Position in year -->
-
-    <NumberPicker
-        android:id="@+id/position_in_year"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginEnd="16dp"
-        android:layout_marginStart="16dp"
-        android:contentDescription="@string/accessibility_date_picker_month"
-        android:focusable="true"
-        android:focusableInTouchMode="true" />
-
-    <!-- Year -->
-
-    <NumberPicker
-        android:id="@+id/year"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginEnd="16dp"
-        android:layout_marginStart="16dp"
-        android:contentDescription="@string/accessibility_date_picker_year"
-        android:focusable="true"
-        android:focusableInTouchMode="true" />
-
-</LinearLayout>