09-13-2020, 08:30 AM
That is a bit too small and pixellated, not able to determine how extensive the drawing lines are. With a coloured background I would use the clone (or heal) tool and a fuzzy brush to (carefully) paint out anything not required or you might just paint it out with the paint tool. There will be other ways, there is a plugin resynthesize + heal-selection which copies border pixels into a selection that might work. Wait for other suggestions to come in. Post a full size (small) portion of the drawing might help