Run cargo fix.

src/intermediate/ast_node.rs

@@ -18,7 +18,7 @@ use super::plain_link::IPlainLink;
 use super::plain_text::IPlainText;
 use super::radio_link::IRadioLink;
 use super::radio_target::IRadioTarget;
-use super::registry::Registry;
+
 use super::regular_link::IRegularLink;
 use super::statistics_cookie::IStatisticsCookie;
 use super::strike_through::IStrikeThrough;