Remove singuliere from MAINTAINERS (#19883)

Author: singuliere

MAINTAINERS

@@ -45,6 +45,5 @@ Steven Kriegler <sk.bunsenbrenner@gmail.com> (@justusbunsi)
 Jimmy Praet <jimmy.praet@telenet.be> (@jpraet)
 Leon Hofmeister <dev.lh@web.de> (@delvh) 
 Gusted <williamzijl7@hotmail.com) (@Gusted)
-singuliere <singuliere@autistici.org> (@singuliere)
 silentcode <silentcode@senga.org> (@silentcodeg)
 Wim <wim@42.be> (@42wim)