Removed myself from MPL and type_traits maintainership

[SVN r31571]

libs/maintainers.txt

@@ -25,7 +25,7 @@ iterator              David Abrahams <dave -at- boost-consulting.com>, Thomas Wi
 lambda                Jaakko Jarvi <jarvi -at- cs.tamu.edu>
 logic                 Douglas Gregor <dgregor -at- cs.indiana.edu>
 math                  Hubert Holin <Hubert.Holin -at- meteo.fr>, John Maddock <john -at- johnmaddock.co.uk>
-mpl                   Aleksey Gurtovoy <agurtovoy -at- meta-comm.com>, David Abrahams <dave -at- boost-consulting.com>
+mpl                   Aleksey Gurtovoy <agurtovoy -at- meta-comm.com>
 multi_array           Ronald Garcia <garcia -at- osl.iu.edu>
 multi_index           Joaquin M Lopez Munoz <joaquin -at- tid.es>
 numeric/conversion    Fernando Cacciola <fernando_cacciola -at- ciudad.com.ar>
@@ -54,7 +54,7 @@ timer                 Beman Dawes <bdawes -at- acm.org>
 tokenizer
 tr1                   John Maddock <john -at- johnmaddock.co.uk>
 tuple                 Jaakko Jarvi <jarvi -at- cs.tamu.edu>
-type_traits           John Maddock <john -at- johnmaddock.co.uk>, David Abrahams <dave -at- boost-consulting.com>
+type_traits           John Maddock <john -at- johnmaddock.co.uk>
 typeof                Arkadiy Vertleyb <vertleyb -at- hotmail.com>, Peder Holt <peder.holt -at- gmail.com>
 utility
 utility/enable_if     Jaakko Jarvi <jarvi -at- cs.tamu.edu>, Jeremiah Willcock <jewillco -at- osl.iu.edu>