Minor cleanup.

src/parser/parser_context.rs

@@ -84,10 +84,7 @@ impl<'r, 's> ContextTree<'r, 's> {
                         }
                     };
                 }
-                ContextElement::PreviousElementNode(_) => {}
-                ContextElement::StartOfParagraph => {}
-                ContextElement::Context(_) => {}
-                ContextElement::ListItem(_) => {}
+                _ => {}
             };
         }
         // TODO: Make this a specific error instead of just a generic MyError