chore(ui): drop an unused suppression

ui/src/lib/panel/index.svelte.ts

@@ -115,7 +115,6 @@ export class ConversationIndex {
         } catch {
           this.warmed.delete(id);
         }
-        // biome-ignore lint/performance/noAwaitInLoops: the pause between fetches is the point
         await new Promise((resolve) => setTimeout(resolve, WARM_GAP_MS));
       }
     };