No, you can’t take open source code back

In the most recent example, mikeeusa, the author of an obscure game called GPC-Slots 2, claimed he was rescinding the program’s GPLv2 license from some people and “from anyone who adds a ‘Code of Conduct’ anywhere near my code (to ‘fight sexism’.) Richard M. Stallman, author of the GPLv2 — the open-source license that governs Linux — but no fan of Linux, replied: “The developers of Linux, or any free program, can remove any and all code, at any time, without giving a reason. Thus, anyone downstream of the contributor (which is anyone using the contributor’s code), has an irrevocable license from the contributor.

Source: www.zdnet.com