removing test protocol that isn't used and causes issues with isinsta…

…nce against ErrorKeeper

tests/unittest_protocols.py

@@ -1,6 +1,6 @@
 from typing import Protocol, runtime_checkable
 
-from screenpy import Answerable, Describable, ErrorKeeper, Forgettable, Performable
+from screenpy import Answerable, Describable, Forgettable, Performable
 
 from screenpy_selenium import Chainable
 
@@ -10,11 +10,6 @@ class Question(Answerable, Describable, Protocol):
     ...
 
 
-@runtime_checkable
-class ErrorQuestion(Answerable, Describable, ErrorKeeper, Protocol):
-    ...
-
-
 @runtime_checkable
 class Action(Performable, Describable, Protocol):
     ...