Remove autotools support

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>
4 jobs for remove-autotools in 2 minutes and 42 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Docker Image
passed debian-buster #13727775

00:00:29

 
  Build And Test
passed meson #13727776

00:02:12

passed meson-noglamor #13727777

00:01:16

passed mingw-cross-build #13727778

00:00:35