Remove filename from header image

I was looking for a theme which had a slider that didn’t take up half the page. Yours fit the bill, but you include cropping capabilities.

But the media filename appears right over the media in the slider, preceded by “cropped-“. For instance, a file named “jentel.jpg” appears in the header with “cropped-jentel.jpg” in white emblazoned over the image.

How do I remove the filename from the image?

Thank you.

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