feat(scene.js): streamlined import statements

Removed unused "getCategory" import from the "scene.js" file to clean up
the code and improve maintainability. This change simplifies the
codebase by eliminating unnecessary imports, thus enhancing readability
and potentially reducing the bundle size slightly, assuming there are no
other references to "getCategory" that would keep it in the final
bundle. This adjustment forms part of an ongoing effort to optimize and
streamline the codebase.

assets/js/scene.js

@@ -1,4 +1,4 @@
-import { getScene, getCategory } from "./api";
+import { getScene } from "./api";
 import { loadSidebar } from "./scene/sidebar";
 import { loadNavbar } from "./scene/navbar";