how to remove foto covers from map " photo's"

[gekuppe50]

The covers from the books in my library are also In the map " photo's" 

I want to remove them from that map, but I do not know how to do this

Is there somebody who can help me out?

Thanks.

Ger

[carpetmojo]

What's the reader ?

[tetrapackage]

That will actually depends on what type of model you are currently using..