[gnome-font-viewer] build: Remove autotools support

[Jeremy Bicha <jbicha src gnome org>]

commit ea583a0c8b9c19d6d258b1623aad68f2e9d71ee7
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sat Jun 10 14:28:27 2017 -0400

    build: Remove autotools support
    
    https://wiki.gnome.org/Initiatives/GnomeGoals/MesonPorting
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783613

 Makefile.am      |    3 --
 autogen.sh       |   36 ----------------------
 configure.ac     |   69 -------------------------------------------
 data/Makefile.am |   11 -------
 src/Makefile.am  |   86 ------------------------------------------------------
 5 files changed, 0 insertions(+), 205 deletions(-)