Android: remove save icon and add up button

Source/Android/app/src/main/res/menu/menu_settings.xml

@@ -1,11 +1,3 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
-      xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <item
-        android:id="@+id/menu_save_exit"
-        android:title="@string/preferences_save_exit"
-        android:icon="@drawable/ic_quicksave"
-        app:showAsAction="ifRoom"/>
-
-</menu>
+      xmlns:app="http://schemas.android.com/apk/res-auto"/>