automake: Remove distcheck hack
This was verifying that the autotools build would produce a meson-buildable tarball. That was fine for 1.20 but going forward we should switch to using meson's dist target for the release tarball.
This was verifying that the autotools build would produce a meson-buildable tarball. That was fine for 1.20 but going forward we should switch to using meson's dist target for the release tarball.