[Android] More cleanup. We don't need the preference to enable/disable the overlay in the video preferences anymore.

Source/Android/res/values-ja/strings.xml

@@ -91,7 +91,6 @@
     <string name="video_backend_desc">%s</string>
     <string name="show_fps">FPSを表示</string>
     <string name="show_fps_descrip">エミュレーション速度の指標として、画面左上に毎秒レンダリングされた フレーム数を表示します。</string>
-    <string name="draw_onscreen_controls">画面上のコントロールを描画</string>
 
     <string name="enhancements">画質向上の設定</string>
     <string name="internal_resolution">内部解像度の変更</string>

Source/Android/res/values/strings.xml

@@ -91,7 +91,6 @@
     <string name="video_backend_desc">%s</string>
     <string name="show_fps">Show FPS</string>
     <string name="show_fps_descrip">Show the number of frames rendered per second as a measure of emulation speed.</string>
-    <string name="draw_onscreen_controls">Draw on-screen controls</string>
     
     <string name="enhancements">Enhancements</string>
     <string name="internal_resolution">Internal Resolution</string>

Source/Android/res/xml/video_prefs.xml

@@ -136,10 +136,4 @@
        android:key="showFPS"
        android:summary="@string/show_fps_descrip"
        android:title="@string/show_fps"/>
-    <!--
-    <CheckBoxPreference
-        android:defaultValue="true"
-        android:key="drawOnscreenControls"
-        android:title="@string/draw_onscreen_controls"/>
-        -->
 </PreferenceScreen>