beets-check-git: Disable check().

Test is currently broken upstream:
https://github.com/geigerzaehler/beets-check/issues/13
beets-artistcountry-git: Initial PKGBUILD.
beets-check-git: Revert "Disable check()."

This reverts commit 7e408a8ae609ffdb6de7000c2223bb92d295e6c1.
beets-check-git: Bump $pkgver now that check() is working.