diff --git a/src/utils/events.ts b/src/utils/events.ts
deleted file mode 100644
index 0610be0d..00000000
--- a/src/utils/events.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-export const once = <K extends keyof HTMLElementEventMap>(
-  el: EventTarget,
-  eventType: K,
-) =>
-  new Promise<HTMLElementEventMap[K]>(resolve => {
-    el.addEventListener(eventType, function handler(e) {
-      el.removeEventListener(eventType, handler);
-      resolve(e as HTMLElementEventMap[K]);
-    });
-  });
-
-export const transitionEnd = (el: Element) => once(el, 'transitionend');
-
-export const transitionCancel = (el: Element) => once(el, 'transitioncancel');