Cleanup dependencies.

src/browse-media-util.ts

@@ -1,6 +1,4 @@
 import { HomeAssistant } from 'custom-card-helpers';
-import dayjs from 'dayjs';
-import dayjs_custom_parse_format from 'dayjs/plugin/customParseFormat.js';
 
 import type {
   BrowseMediaQueryParameters,
@@ -17,8 +15,6 @@ import {
 } from './common.js';
 import { localize } from './localize/localize.js';
 
-dayjs.extend(dayjs_custom_parse_format);
-
 export class BrowseMediaUtil {
   /**
    * Return the Frigate event_id given a FrigateBrowseMediaSource object.