Remove android.app.default_searchable=* from Launcher2

This value was deprecated in
I0252952b44ae85dab31221b598ed79cc24e2b580

Change-Id: If5639f2b51dd694f39e89f38e034e3d8efdba585
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ebcdea5..ffedec7 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -94,11 +94,6 @@
             </intent-filter>
         </activity>
 
-        <!-- Enable system-default search mode for any activity in Home -->
-        <meta-data
-            android:name="android.app.default_searchable"
-            android:value="*" />
-
         <!-- Intent received used to install shortcuts from other applications -->
         <receiver
             android:name=".InstallShortcutReceiver"