Make toolbar always visible

app/src/main/res/layout/toolbar.xml

@@ -1,9 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/toolbar"
     android:layout_width="match_parent"
     android:layout_height="?attr/actionBarSize"
     android:background="@color/colorPrimary"
-    android:theme="@style/AppTheme.ActionBar"
-    app:layout_scrollFlags="scroll|enterAlways|snap"/>
+    android:theme="@style/AppTheme.ActionBar"/>