Remove xin-u from maintainers (#23170)

Author: xin-u

MAINTAINERS

@@ -44,7 +44,6 @@ Steven Kriegler <sk.bunsenbrenner@gmail.com> (@justusbunsi)
 Jimmy Praet <jimmy.praet@telenet.be> (@jpraet)
 Leon Hofmeister <dev.lh@web.de> (@delvh) 
 Wim <wim@42.be> (@42wim)
-Xinyu Zhou <i@sourcehut.net> (@xin-u)
 Jason Song <i@wolfogre.com> (@wolfogre)
 Yarden Shoham <hrsi88@gmail.com> (@yardenshoham)
 Yu Tian <zettat123@gmail.com> (@Zettat123)