How to fix "there are 2 event systems in the scene" problem?

Unity Engine
1

Normally, i have one event system on the scene, but if i display ads (applovin) then one more event system is added.

Here is my scene.

The error :
There are 2 event systems in the scene. Please ensure there is always exactly one event system in the scene
UnityEngine.EventSystems.

2

Delete the other event system from the hierarchy?