chore(mypy): Ignore Directive annotations for now

src/doctest_docutils.py:145: error: Cannot override instance variable (previously declared on base class "Directive") with class variable  [misc]
src/doctest_docutils.py:151: error: Cannot override instance variable (previously declared on base class "Directive") with class variable  [misc]
src/doctest_docutils.py:157: error: Cannot override instance variable (previously declared on base class "Directive") with class variable  [misc]
Found 3 errors in 1 file (checked 11 source files)

See also: python/typeshed#11550

src/doctest_docutils.py

@@ -142,20 +142,19 @@ def run(self) -> t.List[Node]:
 class TestsetupDirective(TestDirective):
     """Test setup directive."""
 
-    option_spec: t.ClassVar[OptionSpec] = {"skipif": directives.unchanged_required}
+    option_spec: t.ClassVar[OptionSpec] = {"skipif": directives.unchanged_required}  # type:ignore
 
 
 class TestcleanupDirective(TestDirective):
     """Test cleanup directive."""
 
-    option_spec: t.ClassVar[OptionSpec] = {"skipif": directives.unchanged_required}
+    option_spec: t.ClassVar[OptionSpec] = {"skipif": directives.unchanged_required}  # type:ignore
 
 
 class DoctestDirective(TestDirective):
     """Doctest directive."""
 
-    option_spec: t.ClassVar[OptionSpec] = {
-        "hide": directives.flag,
+    option_spec: t.ClassVar[OptionSpec] = {  # type:ignore
         "no-trim-doctest-flags": directives.flag,
         "options": directives.unchanged,
         "pyversion": directives.unchanged_required,