Remove remains of extra empty lines for flow control statements

black.py

@@ -971,27 +971,6 @@ def is_def(self) -> bool:
             and second_leaf.value == "def"
         )
 
-    @property
-    def is_flow_control(self) -> bool:
-        """Is this line a flow control statement?
-
-        Those are `return`, `raise`, `break`, and `continue`.
-        """
-        return (
-            bool(self)
-            and self.leaves[0].type == token.NAME
-            and self.leaves[0].value in FLOW_CONTROL
-        )
-
-    @property
-    def is_yield(self) -> bool:
-        """Is this line a yield statement?"""
-        return (
-            bool(self)
-            and self.leaves[0].type == token.NAME
-            and self.leaves[0].value == "yield"
-        )
-
     @property
     def is_class_paren_empty(self) -> bool:
         """Is this a class with no base classes but using parentheses?
@@ -1224,8 +1203,7 @@ def maybe_empty_lines(self, current_line: Line) -> Tuple[int, int]:
         """Return the number of extra empty lines before and after the `current_line`.
 
         This is for separating `def`, `async def` and `class` with extra empty
-        lines (two on module-level), as well as providing an extra empty line
+        lines (two on module-level).
-        after flow control keywords to make them more prominent.
         """
         if isinstance(current_line, UnformattedLines):
             return 0, 0