Update pep-0778.rst

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Author: pablogsal

peps/pep-0778.rst

@@ -1,7 +1,6 @@
 PEP: 778
 Title: Safe external debugger interface for CPython
 Author: Pablo Galindo Salgado <pablogsal@python.org>, Matt Wozniski <godlygeek@gmail.com>, Ivona Stojanovic <stojanovic.i@hotmail.com>
-Sponsor: Pablo Galindo Salgado
 Discussions-To: xxxxx
 Status: Draft
 Type: Standards Track