Fix breakage: remove unnecessary config line.

Change-Id: I7876e446104a8fa6d7904ef5752f899aa770d109
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index c530978..8cfe7b4 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -100,7 +100,6 @@
         </activity-alias>
 
         <activity android:name=".wifi.WifiSettingsForSetupWizardXL"
-                  android:theme="@android:style/Theme.NoTitleBar"
                   android:clearTaskOnLaunch="true"
                   android:screenOrientation="landscape"
                   android:exported="true"