Brave talk ads on new tab, how to disable?

I do not know how to disable the Brave Talk penguin ad that is on the background of the new tabs page. I cannot find any solution in settings, and do not want ads for it. I did not enable Brave Rewards

@acu_DEFY you see the customize button on the lower right, yes? Click it → Background Images. Then disable Sponsored Images, which is on the bottom of the backgrounds list.

Believe it or not, other way would have been Get StartedCustomize New Tab Page and then to do like above.