[at-spi2-atk] Remove build-api wrapper

[Emmanuele Bassi <ebassi src gnome org>]

commit 951c82c796f1c977d8e7d0462444b463270f0b32
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Apr 27 11:59:49 2018 +0100

    Remove build-api wrapper
    
    All major build systems and distributors downstream know how to handle
    Meson, these days, so there's no need to provide an Autotools
    compatibility wrapper.

 configure |  146 -------------------------------------------------------------
 1 files changed, 0 insertions(+), 146 deletions(-)