Erase terrain texture similar to paint terrain texture?

I can’t figure out a way to erase terrain textures similar to paint terrain textures. Simply I need this highlighted rocky texture (texture layer) to be erased only from this specific area. Is there a way to simply erase the texture from a specific area instead of removing it from the whole terrain? Painting on top of it with a different texture is not a solution here.

just delete and start all over just like life