Remove isRunnableListing function from loadRunnableListings

Author: Joshua-Lester3

EssentialCSharp.Web/wwwroot/js/trydotnet-module.js

@@ -93,17 +93,6 @@ function loadRunnableListings() {
     return _runnableListingsPromise;
 }
 
-/**
- * Checks whether a listing is present in the curated runnable set.
- * @param {string|number} chapter
- * @param {string|number} listing
- * @returns {Promise<boolean>}
- */
-async function isRunnableListing(chapter, listing) {
-    const set = await loadRunnableListings();
-    return set.has(`${parseInt(chapter, 10)}.${parseInt(listing, 10)}`);
-}
-
 /**
  * Strips #region / #endregion directive lines (INCLUDE, EXCLUDE, etc.)
  * from source code while keeping the code between them intact.