Remove unnecessary context from some util functions.

src/parser/greater_block.rs

@@ -37,7 +37,7 @@ pub fn greater_block<'r, 's>(
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, GreaterBlock<'s>> {
     // TODO: Do I need to differentiate between different greater block types.
-    start_of_line(context, input)?;
+    start_of_line(input)?;
     let (remaining, _leading_whitespace) = space0(input)?;
     let (remaining, (_begin, name)) = tuple((
         tag_no_case("#+begin_"),
@@ -125,7 +125,7 @@ fn greater_block_end<'r, 's>(
     context: Context<'r, 's>,
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, OrgSource<'s>> {
-    start_of_line(context, input)?;
+    start_of_line(input)?;
     let current_name: &str = get_context_greater_block_name(context).ok_or(nom::Err::Error(
         CustomError::MyError(MyError("Not inside a greater block".into())),
     ))?;