>>>>> On Thu, 17 Dec 2020, Mike Gilbert wrote:

> Should I also drop the explicit copyright notice?

>> Copyright (c) 2013-2019 by Robin Hugh Johnson, Andreas K. Hüttel,
>> Marissa Fischer, Michał Górny.

I think that a GLEP shouldn't have such a notice (after all, authors
are listed in the GLEP's header), but you cannot remove it without
permission of all authors.