Remove autotools

To avoid the burden of maintaining multiple build systems
autotools support is removed.
1 job for meson in 5 minutes and 17 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build
failed #295001
build

00:05:17

 
Name Stage Failure
failed
build Build
The Meson build system
Version: 0.37.1
Source dir: /builds/inigomartinez/gbrainy
Build dir: /builds/inigomartinez/gbrainy/_build
Build type: native build

Meson encountered an error in file meson_options.txt, line 1, column 0:
Unknown type feature.
ERROR: Job failed: exit code 1