Remove unnecessary context from some util functions.

src/parser/latex_environment.rs

@@ -28,7 +28,7 @@ pub fn latex_environment<'r, 's>(
     context: Context<'r, 's>,
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, LatexEnvironment<'s>> {
-    start_of_line(context, input)?;
+    start_of_line(input)?;
     let (remaining, _leading_whitespace) = space0(input)?;
     let (remaining, (_opening, name, _open_close_brace, _ws, _line_ending)) = tuple((
         tag_no_case(r#"\begin{"#),
@@ -101,7 +101,7 @@ fn _latex_environment_end<'r, 's, 'x>(
     input: OrgSource<'s>,
     current_name_lower: &'x str,
 ) -> Res<OrgSource<'s>, OrgSource<'s>> {
-    start_of_line(context, input)?;
+    start_of_line(input)?;
     let (remaining, _leading_whitespace) = space0(input)?;
     let (remaining, (_begin, _name, _close_brace, _ws, _line_ending)) = tuple((
         tag_no_case(r#"\end{"#),