(Minor) Remove outdated comment (#1453)

Author: shati-patel

extensions/ql-vscode/src/query-history.ts

@@ -963,8 +963,6 @@ export class QueryHistoryManager extends DisposableObject {
     singleItem: QueryHistoryInfo,
     multiSelect: QueryHistoryInfo[]
   ) {
-    // Local queries only
-    // In the future, we may support cancelling remote queries, but this is not a short term plan.
     const { finalSingleItem, finalMultiSelect } = this.determineSelection(singleItem, multiSelect);
 
     const selected = finalMultiSelect || [finalSingleItem];