Or did i misunderstand the question?
Hi first very nice to meet you.
I think what she is asking is to remove all the license text from the whole site including license text from all files including plugin files and admin files and core files Which i dont believe is covered under the donation policy. Thats why i didnt share the link until i was able to clarify her question.
Lets hope you are right on this one and thats all she needed :)