Remove the check test, and add a gating test. Also remove the
Requires and BuildRequires lines for python3-pyparsing, as the build
only required it for the now-removed check test, and the Python
package build will use setup.py to auto-generate Requires lines.
Resolves: rhbz#1986574
Signed-off-by: Bryan Gurney <bgurney@redhat.com>