math: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Aaron Dalton <aaron@daltons.ca>
  *  Alessando Sagratini <ale_sagra@hotmail.com>
  *  Alex Dupre <ale@FreeBSD.org>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Amarendra Godbole <amarendra.godbole@gmail.com>
  *  Anders Nordby <anders@FreeBSD.org>
  *  Andreas Fehlner (fehlner@gmx.de)
  *  Andrew L. Neporada <andrew@chg.ru>
  *  Andrey <gugu@zoo.rambler.ru>
  *  Andrey Zakhvatov
  *  Anton Berezin <tobez@FreeBSD.org>
  *  Anton Berezin <tobez@plab.ku.dk>
  *  Anton Berezin <tobez@tobez.org>
  *  Anton Shterenlikht
  *  Anton Shterenlikht <mexas@bris.ac.uk>
  *  Bob Eager <bob@eager.cx>
  *  Charlie Kester <corky1951@comcast.net>
  *  Cheng-Lung Sung <clsung@FreeBSD.org>
  *  Cheng-Lung Sung <clsung@dragon2.net>
  *  Chris D. Faulhaber <jedgar@fxp.org>
  *  Christopher J. Ruwe
  *  Christopher Key <cjk32@cam.ac.uk>
  *  Chuck Hein <geekdude@pacbell.net>
  *  Cyrille Szymanski <cnszym@gmail.com>
  *  Dan Rue <drue@therub.org>
  *  Danilo Egea Gondolfo <danilo@FreeBSD.org>
  *  David Naylor <dbn@FreeBSD.org>
  *  David Naylor <naylor.b.david@gmail.com>
  *  Dereckson <dereckson@gmail.com>
  *  Devin Teske <dteske@FreeBSD.org>
  *  Dmitry Sivachenko <demon@FreeBSD.org>
  *  Dmitry Sivachenko <mitya@yandex-team.ru>
  *  Don Croyle <croyle@gelemna.org>
  *  Douglas K. Rand (rand@meridian-enviro.com)
  *  Dylan Simon <dylan@dylex.net>
  *  Edwin Groothuis <edwin@mavetju.org>
  *  Eijiro Shibusawa <ej-sib@ice.uec.ac.jp>
  *  Emanuel Haupt <ehaupt@FreeBSD.org>
  *  Eoin Lawless (eoin@maths.tcd.ie)
  *  Eric A. Griff <eagriff@global2000.net>
  *  Eric van Gyzen <vangyzen@stat.duke.edu>
  *  Ewgenij Gawrilow <gawrilow@math.tu-berlin.de>
  *  Fernan Aguero <fernan@iib.unsam.edu.ar>
  *  Foxfair Hu <foxfair@FreeBSD.org>
  *  Frederic Han <han@math.jussieu.fr>
  *  Gabor Kovesdan <gabor@FreeBSD.org>
  *  Gea-Suan Lin <gslin@gslin.org>
  *  George Reid <greid@ukug.uk.freebsd.org>
  *  Giuseppe Pilichi aka Jacula Modyun <jacula@gmail.com>
  *  Greg Larkin <glarkin@FreeBSD.org>
  *  Guangyuan Yang <ygy@FreeBSD.org>
  *  Gustau Perez i Querol <gustau.perez@gmail.com>
  *  Heinz Tschabitscher
  *  Horia Racoviceanu <horia@racoviceanu.com>
  *  Hye-Shik Chang <perky@fallin.lv>
  *  Iblis Lin <iblis@hs.ntnu.edu.tw>
  *  Issei Suzuki <issei@jp.FreeBSD.ORG>
  *  Janni
  *  Jason Harris <jharris@widomaker.com>
  *  Javad Kouhi <javad.kouhi@gmail.com>
  *  Jean-Yves Lefort <jylefort@FreeBSD.org>
  *  Jin-Shan Tseng <tjs@cdpa.nsysu.edu.tw>
  *  Joe Marcus Clarke <marcus@FreeBSD.org>
  *  Johannes Dieterich <dieterich@ogolem.org>
  *  Johannes M Dieterich <jmd@FreeBSD.org>
  *  Johannes Meixner <johannes@perceivon.net>
  *  John Marino <marino@FreeBSD.org>
  *  Joseph Koshy <jkoshy@FreeBSD.org>
  *  Ju Pengfei <ju.pengfei@gmail.com>
  *  Jukka A. Ukkonen <jau@iki.fi>
  *  Kay Lehmann <kay_lehmann@web.de>
  *  Kevin Lo <kevlo@FreeBSD.org>
  *  Klaus T. Aehlig <aehlig@linta.de>
  *  Kubilay Kocak <koobs@FreeBSD.org>
  *  Kurt Jaeger <fbsd-ports@opsec.eu>
  *  Lars Engels <lme@FreeBSD.org>
  *  Lars Koeller <Lars.Koeller@Uni-Bielefeld.DE>
  *  Lars Koeller <Lars.Koeller@Uni-Bielefeld.de>
  *  Li-Wen Hsu <lwhsu@FreeBSD.org>
  *  Li-Wen Hsu <lwhsu@lwhsu.org>
  *  M. L. Dodson, <bdodson@scms.utmb.edu>
  *  Maho Nakata <maho@FreeBSD.org>
  *  Mario S F Ferreira <lioux@FreeBSD.org>
  *  Mario S F Ferreira <lioux@linf.unb.br> et al.
  *  Mario Sergio Fujikawa Ferreira <lioux@FreeBSD.org>
  *  Mark Felder <feld@FreeBSD.org>
  *  Mark R V Murray <markm@FreeBSD.org>
  *  Martin Matuska <mm@FreeBSD.org>
  *  Matthew Seaman <matthew@FreeBSD.org>
  *  Maurice Castro <maurice@serc.rmit.edu.au>
  *  Maxim Sobolev <sobomax@FreeBSD.org>
  *  Maxime Henrion <mux@FreeBSD.org>
  *  Michael Haro <mharo@FreeBSD.org>
  *  Michael Johnson <ahze@FreeBSD.org>
  *  Michael Johnson <ahze@ahze.net>
  *  Michael Neumann <mneumann@ntecs.de>
  *  Muhammad Moinur Rahmanh <5u623l20@gmail.com>
  *  NAKATA Maho <chat95@mbox.kyoto-inet.or.jp>
  *  NAKATA, Maho <maho@FreeBSD.org>
  *  Nakata Maho <maho@FreeBSD.org>
  *  Nicola Vitale <nivit@email.it>
  *  Olivier Duchateau
  *  Pedro F. Giffuni
  *  Pedro F. Giffuni <giffunip@asme.org>
  *  Pedro Giffuni
  *  Pedro Giffuni <giffunip@asme.org>
  *  Pedro Giffuni <pfg@FreeBSD.org>
  *  Peter Pentchev <roam@FreeBSD.org>
  *  Philip Paeps <philip@FreeBSD.org>
  *  Pierre-Paul Lavoie <ppl@nbnet.nb.ca>
  *  Pietro Cerutti <gahr@FreeBSD.org>
  *  Piotr Rybicki <meritus@innervision.pl>
  *  Po-Chuan Hsieh <sunpoet@FreeBSD.org>
  *  Rainer Hurling <rhurlin@gwdg.de>
  *  Robert Jenssen
  *  Robin Schilham
  *  Rod Taylor <ports@rbt.ca>
  *  Roman Neuhauser <neuhauser@sigpipe.cz>
  *  Sander Vesik <sander@haldjas.folklore.ee>
  *  Scott Flatman <sf@dsinw.com>
  *  Seamus Venasse <svenasse@polaris.ca>
  *  Sergey A. Osokin <osa@FreeBSD.org>
  *  Sergey Akifyev <asa@agava.com>
  *  Sergey Akifyev <asa@gascom.ru>
  *  Sergey Skvortsov <skv@FreeBSD.org>
  *  Sergey Skvortsov <skv@protey.ru>
  *  Shell Hung <shell@shellhung.org>
  *  Shin-ya MURAKAMI <murashin@gfd-dennou.org>
  *  Stas Timokhin <devel@stasyan.com>
  *  Stefan A. Deutscher (sad@mailaps.org)
  *  Stefan Esser <se@StefanEsser.FreeBSD.org>
  *  Stephen Montgomery-Smith <stephen@FreeBSD.edu>
  *  Stephen Montgomery-Smith <stephen@FreeBSD.org>
  *  Stephen Montgomery-Smith <stephen@math.missouri.edu>
  *  Stephen Montgomery-Smith <stephen@missouri.edu>
  *  Steve Wills <steve@mouf.net>
  *  Steve Wills <swills@FreeBSD.org>
  *  Steven Kreuzer <skreuzer@FreeBSD.org>
  *  Steven Kreuzer <skreuzer@f2o.org>
  *  Sunpoet Po-Chuan Hsieh <sunpoet@FreeBSD.org>
  *  TAKATSU Tomonari <tota@FreeBSD.org>
  *  Thierry Thomas (<thierry@pompo.net>)
  *  Thierry Thomas <thierry@pompo.net>
  *  Thomas Gellekum <tg@FreeBSD.org>
  *  Thomas Sandford <freebsduser@paradisegreen.co.uk>
  *  Timothy Bourke <timbob@bigpond.com>
  *  Tony Maher
  *  Tz-Huan Huang <tzhuan@csie.org>
  *  Vsevolod Stakhov <vsevolod@FreeBSD.org>
  *  Vsevolod Stakhov <vsevolod@highsecure.ru>
  *  Waitman Gobble <waitman@waitman.net>
  *  Wen Heping <wen@FreeBSD.org>
  *  Wen Heping <wenheping@gmail.com>
  *  Will Andrews <andrews@technologist.com>
  *  Yi-Hsuan Hsin <mhsin@mhsin.org>
  *  Ying-Chieh Liao <ijliao@FreeBSD.org>
  *  Yinghong.Liu <relaxbsd@gmail.com>
  *  Yoshiaki UCHIKAWA <yoshiaki@kt.rim.or.jp>
  *  Yukihiro Nakai <Nakai@technologist.com>
  *  Yuri Victorovich <yuri@FreeBSD.org>
  *  Yuri Victorovich <yuri@rawbw.com>
  *  Yuri Victorovich <yuri@tsoft.com>
  *  Zhen REN <bg1tpt@gmail.com>
  *  amir.husaini@gmail.com
  *  arved
  *  asami
  *  b.f. <bf@FreeBSD.org>
  *  bart <lbartoletti@FreeBSD.org>
  *  bauerm
  *  bf <bf2006a@yahoo.com>
  *  bf <bf@FreeBSD.org>
  *  bf@FreeBSD.org
  *  bremner@unb.ca
  *  chinsan
  *  chuckr@FreeBSD.org
  *  dawe <daweonline@gmail.com>
  *  dbader@ece.unm.edu
  *  dd
  *  demon@FreeBSD.org
  *  dikshie
  *  eserte
  *  fenner
  *  gahr
  *  giffunip
  *  gmarco@giovannelli.it
  *  gurkan@phys.ethz.ch
  *  ijliao
  *  janek@gaja.ipan.lublin.pl
  *  jhs@berklix.com / asami (original)
  *  jmz
  *  js@jeannot.org
  *  keith@FreeBSD.org
  *  ljo
  *  mr
  *  nobu@rd.isac.co.jp
  *  pauls@utdallas.edu
  *  pusto@web.de
  *  reg@shale.csir.co.za
  *  rfarmer@predatorlabs.net
  *  stephen@FreeBSD.org
  *  thierry@pompo.net
  *  tobez
  *  will
  * # Created by Matthias Fechner <mfechner@FreeBSD.org>

With hat:	portmgr