Polishing accessibility tutorial UI.

Change-Id: I059f00e94cdc906935b2d42a505f31512dd99668
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 77fd94e..797dbf1 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -948,7 +948,7 @@
                 android:label="@string/accessibility_tutorial_title"
                 android:configChanges="orientation"
                 android:immersive="true"
-                android:theme="@android:style/Theme.Holo">
+                android:theme="@android:style/Theme.Holo.NoActionBar">
             <intent-filter>
                 <action android:name="android.settings.ACCESSIBILITY_TUTORIAL" />
                 <category android:name="android.intent.category.DEFAULT" />