add comments, remove dead code

cli/lsp/language_server.rs

@@ -1518,17 +1518,24 @@ impl Inner {
 
     // if the current deno.json has changed, we need to reload it
     if has_config_changed(&self.config, &changes) {
+      // Check the 'current' config specifier from both before and after it's
+      // updated. Check canonicalized and uncanonicalized variants for each.
+      // If any are included in `changes`, send our custom notification for
+      // `deno.json` changes: `deno/didChangeDenoConfigurationNotification`.
       let mut files_to_check = HashSet::with_capacity(4);
+      // Collect previous config specifiers.
       if let Some(url) = self.config.maybe_config_file().map(|c| &c.specifier) {
         files_to_check.insert(url.clone());
       }
       if let Some(url) = self.config.maybe_config_file_canonicalized_specifier()
       {
         files_to_check.insert(url.clone());
       }
+      // Update config.
       if let Err(err) = self.update_config_file().await {
         self.client.show_message(MessageType::WARNING, err);
       }
+      // Collect new config specifiers.
       if let Some(url) = self.config.maybe_config_file().map(|c| &c.specifier) {
         files_to_check.insert(url.clone());
       }

test_util/src/lsp.rs

@@ -407,12 +407,6 @@ impl InitializeParamsBuilder {
     self
   }
 
-  pub fn unset_deno_enable(&mut self) -> &mut Self {
-    let options = self.initialization_options_mut();
-    options.insert("enable".to_string(), json!(null));
-    self
-  }
-
   pub fn set_import_map(&mut self, value: impl AsRef<str>) -> &mut Self {
     let options = self.initialization_options_mut();
     options.insert("importMap".to_string(), value.as_ref().to_string().into());