Remove unnecessary context from some util functions.

src/parser/dynamic_block.rs

@@ -42,7 +42,7 @@ pub fn dynamic_block<'r, 's>(
             "Cannot nest objects of the same element".into(),
         ))));
     }
-    start_of_line(context, input)?;
+    start_of_line(input)?;
     let (remaining, _leading_whitespace) = space0(input)?;
     let (remaining, (_begin, name, parameters, _ws)) = tuple((
         recognize(tuple((tag_no_case("#+begin:"), space1))),
@@ -110,7 +110,7 @@ fn dynamic_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 (remaining, source) = recognize(tuple((
         space0,
         tag_no_case("#+end:"),