Can’t replace original logo from library site import

Hello,

I have just set up a bunch of websites using the site library. I have replaced the logo and site branding via the customiser, but on mobile the original logos that came with the imported site are still there. I can’t seem to find anywhere where I can change this – the original logo is no longer in the customiser and I can’t see it in widgets etc. How can I remove the original logo on mobile & tablet?

Thanks!