Clean up.

src/parser/horizontal_rule.rs

@@ -11,7 +11,6 @@ use nom::sequence::tuple;
 
 use super::keyword::affiliated_keyword;
 use super::org_source::OrgSource;
-use crate::context::parser_with_context;
 use crate::context::RefContext;
 use crate::error::Res;
 use crate::parser::util::start_of_line;
@@ -19,7 +18,7 @@ use crate::types::HorizontalRule;
 
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
 pub(crate) fn horizontal_rule<'b, 'g, 'r, 's>(
-    context: RefContext<'b, 'g, 'r, 's>,
+    _context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, HorizontalRule<'s>> {
     let (input, affiliated_keywords) = many0(affiliated_keyword)(input)?;