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
1 file changed