Remove unused header entries

Author: zklaus

peps/pep-0790.rst

@@ -3,14 +3,12 @@ Title: New environment markers for modern Python environments
 Author: Klaus Zimmermann <klaus_zimmermann@gmx.de>,
         Ralf Gommers <ralf.gommers@gmail.com>
 Sponsor: Lysandros Nikolaou <lisandrosnik@gmail.com>
-PEP-Delegate: <PEP delegate's name>
 Discussions-To: https://discuss.python.org/t/environment-marker-for-free-threading/60007
 Status: Draft
 Type: Standards Track
 Topic: Packaging
 Created: 21-Feb-2025
 Python-Version: 3.14
-Post-History: <REQUIRED: dates, in dd-mmm-yyyy format, and corresponding links to PEP discussion threads>
 
 ..
     If adopted, the contents of this pep should be integrated into the