Simplify copyright

Remove copyright lines about INSTALL and the included m4/* files

debian/copyright

@@ -4,8 +4,7 @@ Upstream-Contact: https://github.com/canihavesomecoffee/udis86/issues
 Source: https://github.com/canihavesomecoffee/udis86
 
 Files:     *
-Copyright: 2002 -2009
-           2002-2013 Vivek Thampi
+Copyright: 2002-2013 Vivek Thampi
 License:   BSD-2-Clause
  Redistribution and use in source and binary forms, with or without modification,
  are permitted provided that the following conditions are met:
@@ -27,25 +26,6 @@ License:   BSD-2-Clause
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-Files:     m4/ax_compare_version.m4
-           m4/ax_prog_sphinx_version.m4
-           m4/ax_prog_yasm_version.m4
-           m4/ax_with_prog.m4
-           m4/ax_with_python.m4
-Copyright: 2008 Dustin J. Mitchell <dustin@cs.uchicago.edu>
-           2008 Tim Toolan <toolan@ele.uri.edu>
-           2008-2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
-License:   __AUTO_PERMISSIVE__
- Autogenerated files with permissive licenses.
-
-Files:     INSTALL
-Copyright: 1994-2006 Free Software Foundation, Inc.
-License:   __UNKNOWN__
- This file is free documentation; the Free Software Foundation gives
- unlimited permission to copy, distribute and modify it.
- .
- Basic Installation
-
 Files:
  debian/*
 Copyright: