A doubt about the Matine Camera, is it possible to change the mesh and let it lighter?

Hello friends, I am developing a game with top down camera for mobile and there is something annoying me. There are two cameras above the character, the first one is the TOPDOWN camera and the other is VR camera… However I dont’t want, the VR camera is uselles for me, and the both added are equal to 9056 polygons…

Is there a way to remove this useless VR cam or a way to change the mesh of the main camera? And its possible to change the mesh and don’t affect the vision of the player?

Thanks for all!