pytest-enabler is not needed to run tests.

--- jaraco.classes-3.4.0/setup.cfg.orig
+++ jaraco.classes-3.4.0/setup.cfg
@@ -21,7 +21,6 @@
 [options.extras_require]
 testing = 
 	pytest >= 6
-	pytest-enabler >= 2.2
 docs = 
 	sphinx >= 3.5
 	jaraco.packaging >= 9.3