IQ2000: drop maintainer

After I found his email bouncing, Stan, via private communication which
Nick helped with, has indicated that - having retired - he won't any
longer fulfill the maintainer role here.
diff --git a/binutils/MAINTAINERS b/binutils/MAINTAINERS
index b62536d..2aaadc8 100644
--- a/binutils/MAINTAINERS
+++ b/binutils/MAINTAINERS
@@ -91,7 +91,6 @@
   HPPA		   Dave Anglin <dave.anglin@bell.net>
   HPPA elf64	   Jeff Law <law@redhat.com> [Basic maintainance only]
   IA-64		   Jim Wilson <wilson@tuliptree.org>
-  IQ2000	   Stan Cox <scox@redhat.com>
   ix86		   H.J. Lu <hjl.tools@gmail.com>
   ix86 COFF	   DJ Delorie <dj@redhat.com>
   ix86 PE/COFF	   Dave Korn <dave.korn.cygwin@gmail.com>