Player Settings -> Icon -> Enable Android Banner?

Questions & Answers
1

I don’t see any mention of this setting Unity - Scripting API: Android

What does it do? It’s asking for a 320x180 image/texture.

I am in the process of installing some Google Admob plug-ins, so I guess it could be related to that, but I just happen to notice this setting I’ve never seen before, while looking for some other settings.

2

This is the banner for Android TV: https://developer.android.com/design/tv/patterns.html#banner

You may want to disable it if you are not publishing for Android TV.