dev-python/sentry-sdk: Revert the pytest-markdown workaround

The awful mistake of dev-python/pytest-markdown is now sterilized
via epytest, no need to work around it anymore.

Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-python/sentry-sdk/sentry-sdk-1.5.12.ebuild

@@ -85,7 +85,3 @@ EPYTEST_DESELECT=(
 	# TODO
 	tests/integrations/wsgi/test_wsgi.py::test_auto_session_tracking_with_aggregates
 )
-
-python_test() {
-	epytest tests
-}