Swapped single action overflow menu for the toolbar refresh button.

app/src/main/res/menu/main_menu.xml

@@ -1,9 +0,0 @@
-<?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_refresh"
-        android:icon="@drawable/ic_refresh"
-        android:title="@string/menu_refresh"
-        app:showAsAction="always" />
-</menu>