Fix a typo in AndroidManifest.xml

And some drive-by clean up.

Change-Id: Ic036f8f5bec8064a5d55e0e032ce45e483323b14
Fixes: 78889604
Test: atest
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e8e45e3..060429e 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1114,7 +1114,9 @@
             </intent-filter>
         </activity>
 
-        <activity android:name=".slice.SliceDeepLinkSpringBoard"
+        <activity
+            android:name=".slices.SliceDeepLinkSpringBoard"
+            android:excludeFromRecents="true"
             android:theme="@android:style/Theme.NoDisplay">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />