remove duplicate AUTHORS

AUTHORS

@@ -1,60 +0,0 @@
-## Mapnik Contibutors
-
-Mapnik was written by Artem Pavlenko with contributions from:
-
-Andy Allen
-AJ Ashton
-Lucio Asnaghi
-Justin Bronn
-Christopher Brown
-Jon Burgess
-Toby Collet
-Robert Coup
-Berteun Damman
-Craig de Stigter 
-Jean-Francois Doyon
-David Eastcott
-Krzysztof Godlewski
-Beau Gunderson
-John Hague
-Dominic Hargreaves
-Aubrey Holland
-Tom Hughes
-Konstantin Käfer
-Mak Kolybabi
-Peter Körner
-Hermann Kraus
-Stella Laurenzo
-David Leaver
-Carlos López
-Dennis Luxen
-Tom MacWright
-Michal Migurski
-Andrii Mishkovskyi
-Ben Moores
-Dražen Odobašić
-Cameron Patrick
-Igor Podolskiy
-Reid Priedhorsky
-Brian Quinion
-Marcin Rudowski
-Christopher Schmidt
-Andreas Schneider
-Vincent Schut
-Ehud Shabtai
-David Siegel
-Steve Singer
-Paul Smith
-Vince Spader
-Philipp Spitzer
-Dane Springmeyer
-Dave Stubbs
-River Tarnell
-Oliver Tonnhofer
-Alberto Valverde
-Martijn van Oosterhout 
-Andreas Volz
-Lennard voor den Dag
-Shaun Walbridge
-Nick Whitelegg
-Leslie Wu