Scope.flows is never used so remove it.

jedi/parser/python/tree.py

@@ -256,10 +256,6 @@ class Scope(PythonBaseNode, DocstringMixin):
     def subscopes(self):
         return self._search_in_scope(Scope)
 
-    @property
-    def flows(self):
-        return self._search_in_scope(Flow)
-
     @property
     def imports(self):
         return self._search_in_scope(Import)