Bug 1108252 - Remove launcher icon for search activity. r=mfinkle

mobile/android/search/manifests/SearchAndroidManifest_activities.xml.in

@@ -5,11 +5,6 @@
             android:label="@string/search_app_name"
             android:configChanges="orientation|screenSize"
             android:theme="@style/AppTheme">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
             <intent-filter>
                 <action android:name="android.intent.action.ASSIST"/>