annotation_parens

src/black/linegen.py

@@ -181,9 +181,6 @@ def visit_stmt(
 
     def visit_funcdef(self, node: Node) -> Iterator[Line]:
         """Visit function definition."""
-        if Preview.annotation_parens not in self.mode:
-            yield from self.visit_stmt(node, keywords={"def"}, parens=set())
-        else:
         yield from self.line()
 
         # Remove redundant brackets around return type annotation.

src/black/mode.py

@@ -149,7 +149,6 @@ def supports_feature(target_versions: Set[TargetVersion], feature: Feature) -> b
 class Preview(Enum):
     """Individual preview style features."""
 
-    annotation_parens = auto()
     empty_lines_before_class_or_def_with_leading_comments = auto()
     handle_trailing_commas_in_head = auto()
     long_docstring_quotes_on_newline = auto()