Clean up task affinity

Bug: 112254258
Test: manual
Change-Id: Ifd9321f5d0532f01db2f6c0b97c914418e3a15e7
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index bb43bbf..e2e89bd 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2452,7 +2452,6 @@
         <activity
             android:name="Settings$ZenAccessSettingsActivity"
             android:label="@string/manage_zen_access_title"
-            android:taskAffinity="com.android.settings"
             android:parentActivityName="Settings">
             <intent-filter android:priority="1">
                 <action android:name="android.settings.NOTIFICATION_POLICY_ACCESS_SETTINGS" />