remove silentcode from MAINTAINERS (#22143)

Signed-off-by: silentcode <silentcode@senga.org>

Author: silentcodeg

MAINTAINERS

@@ -44,7 +44,6 @@ Janis Estelmann <admin@oldschoolhack.me> (@KN4CK3R)
 Steven Kriegler <sk.bunsenbrenner@gmail.com> (@justusbunsi)
 Jimmy Praet <jimmy.praet@telenet.be> (@jpraet)
 Leon Hofmeister <dev.lh@web.de> (@delvh) 
-silentcode <silentcode@senga.org> (@silentcodeg)
 Wim <wim@42.be> (@42wim)
 xinyu <xinyu@nerv.org.cn> (@penlinux)
 Jason Song <i@wolfogre.com> (@wolfogre)