Remove splash screen activity from sample app

Summary: The yoga splash screen that runs at the beginning of the app is unnecessary and can be removed for simplicty.

Reviewed By: emilsjolander

Differential Revision: D4571624

fbshipit-source-id: 3eb12f7c3447805f4546bd192df9670c5427572a

android/sample/res/layout/splash_layout.xml

@@ -1,27 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-
-<!--
-  Copyright 2014-present, Facebook, Inc.
-  All rights reserved.
-
-  This source code is licensed under the license found in the
-  LICENSE-examples file in the root directory of this source tree.
--->
-
-<YogaLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:yoga="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@color/yoga_grey"
-    yoga:align_items="center"
-    yoga:justify_content="center"
-    >
-  <ImageView
-      android:layout_width="wrap_content"
-      android:layout_height="wrap_content"
-      android:src="@drawable/ic_launcher"
-      yoga:height="200dp"
-      yoga:aspect_ratio="1"
-      />
-</YogaLayout>

android/sample/res/values/styles.xml

@@ -20,11 +20,4 @@
   <style name="MyTitleText" parent="TextAppearance.AppCompat.Widget.ActionBar.Title">
     <item name="android:textColor">@color/yoga_blue</item>
   </style>
-  <style name="AppFullScreenTheme" parent="Theme.AppCompat.Light">
-    <item name="android:windowNoTitle">true</item>
-    <item name="android:windowActionBar">false</item>
-    <item name="android:windowFullscreen">true</item>
-    <item name="android:windowContentOverlay">@null</item>
-  </style>
-
 </resources>