child-theme notification disable

Hi, how can I disable the following notification?

“We recommend using a child-theme for Ultimate Member customization. Unlike official theme repositories, child themes don’t have dependencies that could lead to your custom files being overwritten during a theme upgrade. Without a child theme, your customization files may be deleted after every theme update.”

We won’t be using child theme because parent theme is our own, custom developed so completely no reason for packing it in additional layer of child theme.

Best regards