Put the callback back into connector, no need to assign

Author: krassowski

packages/jupyterlab-lsp/src/virtual/codemirror_editor.ts

@@ -519,21 +519,18 @@ export class CodeMirrorVirtualEditor
       callback(cm_editor);
     }
     if (monitor_for_new_blocks) {
-      let activation_callback = (
-        adapter: WidgetAdapter<IDocumentWidget>,
-        data: IEditorChangedData
-      ) => {
-        let { editor } = data;
-        if (editor == null) {
-          return;
-        }
-        let cm_editor = (editor as CodeMirrorEditor).editor;
-        if (!editors_with_handlers.has(cm_editor)) {
-          callback(cm_editor);
+      this.adapter.editorAdded.connect(
+        (adapter: WidgetAdapter<IDocumentWidget>, data: IEditorChangedData) => {
+          let { editor } = data;
+          if (editor == null) {
+            return;
+          }
+          let cm_editor = (editor as CodeMirrorEditor).editor;
+          if (!editors_with_handlers.has(cm_editor)) {
+            callback(cm_editor);
+          }
         }
-      };
-
-      this.adapter.editorAdded.connect(activation_callback);
+      );
       this.adapter.editorRemoved.connect(
         (adapter, data: IEditorChangedData) => {
           let { editor } = data;