MetaG: drop maintainer

[Jan Beulich]

After I found his email bouncing, Markos has indicated via private
communication that he can't any longer fulfill the maintainer role here.

--- a/binutils/MAINTAINERS
+++ b/binutils/MAINTAINERS
@@ -108,7 +108,6 @@ responsibility among the other maintaine
   MACH-O           Tristan Gingold <tgingold@free.fr>
   MAXQ		   Inderpreet Singh <inderpreetb@noida.hcltech.com>
   MEP		   Nick Clifton <nickc@redhat.com>
-  METAG            Markos Chandras <markos.chandras@imgtec.com>
   MICROBLAZE	   Michael Eager <eager@eagercon.com>
   MIPS		   Chenghua Xu <paul.hua.gm@gmail.com>
   MIPS I-IV	   Maciej W. Rozycki <macro@orcam.me.uk>