tox: 'twine check' already checks RST, don't need to do it again

tox.ini

@@ -48,8 +48,6 @@ commands = pip wheel -w {envtmpdir}/build --no-deps .
 
 [testenv:bdist]
 deps =
-    pygments
-    docutils
     setuptools
     wheel
 skip_install = true
@@ -59,8 +57,6 @@ install_command =
 whitelist_externals =
     rm
 commands =
-    # check metadata and rst long_description
-    python setup.py check --restructuredtext --strict
     # clean up build/ and dist/ folders
     python -c 'import shutil; shutil.rmtree("dist", ignore_errors=True)'
     python setup.py clean --all