How to remove the Epics mug logo?

I want to remove the logo from the Epics mug in RealisticRendering project. How should I do that?

Make a new material which has a Vector input to Base Colour. This is the mug’s color. Then add a scalar to Roughness with a value of 0.1, for the same shiny look in the image you provided.
Now set the material for the mug to the material you just made. Open the content browser, find the mug and change the material using the drop down list.