[gupnp-av] build: Drop autotools

[Jens Georg <jensgeorg src gnome org>]

commit 4a1e42fce8c7e515977c5b14ab59f0cecc9e727e
Author: Jens Georg <mail jensge org>
Date:   Sat Jun 12 21:44:11 2021 +0200

    build: Drop autotools

 ChangeLog                       |   0
 Makefile.am                     |  12 ---
 autogen.sh                      |  45 ------------
 configure.ac                    |  94 ------------------------
 data/Makefile.am                |   2 -
 doc/Makefile.am                 |  90 -----------------------
 gupnp-av-1.0-uninstalled.pc.in  |  10 ---
 gupnp-av-1.0.pc.in              |  10 ---
 libgupnp-av/Makefile.am         | 142 ------------------------------------
 m4/ax_append_compile_flags.m4   |  65 -----------------
 m4/ax_append_flag.m4            |  71 ------------------
 m4/ax_check_compile_flag.m4     |  74 -------------------
 m4/ax_check_enable_debug.m4     | 113 ----------------------------
 m4/ax_compiler_flags.m4         | 158 ----------------------------------------
 m4/ax_compiler_flags_cflags.m4  | 133 ---------------------------------
 m4/ax_compiler_flags_gir.m4     |  60 ---------------
 m4/ax_compiler_flags_ldflags.m4 |  75 -------------------
 m4/ax_is_release.m4             |  69 ------------------
 m4/ax_require_defined.m4        |  37 ----------
 m4/introspection.m4             |  94 ------------------------
 m4/vapigen.m4                   |  43 -----------
 tests/Makefile.am               |  40 ----------
 tests/gtest/Makefile.am         |  50 -------------
 vala/Makefile.am                |  23 ------
 24 files changed, 1510 deletions(-)