Fix upper back button behavior of LocationSettingsActivity

In acrossing different apps, it should go back to previous app if user
click the upper back button on LocationSettingsActivity. So remove the
android:parentActivityName attribute of LocationSettingsActivity from
AndroidManifest.

Fixes: 140370314
Test: visual
Change-Id: I1efa750f1371a313c83844a67862d903cfe65bf6
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 13eed78..ef5facf 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1228,8 +1228,7 @@
             android:name="Settings$LocationSettingsActivity"
             android:label="@string/location_settings_title"
             android:icon="@drawable/ic_homepage_location"
-            android:configChanges="orientation|keyboardHidden|screenSize"
-            android:parentActivityName="Settings">
+            android:configChanges="orientation|keyboardHidden|screenSize">
             <intent-filter android:priority="1">
                 <action android:name="android.settings.LOCATION_SOURCE_SETTINGS" />
                 <category android:name="android.intent.category.DEFAULT" />