Remove stale label_for_completion impl from JSON plugin

plugins/json_language/src/lib.rs

@@ -89,27 +89,6 @@ pub fn cached_server_binary(container_dir: PathBuf) -> Option<PathBuf> {
     }
 }
 
-// #[export]
-// pub fn label_for_completion(
-//     item: &lsp::CompletionItem,
-//     // language: &language::Language,
-// ) -> Option<language::CodeLabel> {
-//     // TODO: Push more of this method down into the plugin.
-//     use lsp::CompletionItemKind as Kind;
-//     let len = item.label.len();
-//     let grammar = language.grammar()?;
-//     let kind = format!("{:?}", item.kind?);
-
-//     // TODO: implementation
-
-//     let highlight_id = grammar.highlight_id_for_name(&name)?;
-//     Some(language::CodeLabel {
-//         text: item.label.clone(),
-//         runs: vec![(0..len, highlight_id)],
-//         filter_range: 0..len,
-//     })
-// }
-
 #[export]
 pub fn initialization_options() -> Option<String> {
     Some("{ \"provideFormatter\": true }".to_string())