refactor: improve code quality

src/pages/rss.xml.ts

@@ -1,6 +1,5 @@
 import rss from '@astrojs/rss';
 import {siteConfig} from '@/config';
-import { getCollection } from 'astro:content';
 import sanitizeHtml from 'sanitize-html';
 import MarkdownIt from 'markdown-it';
 import {getSortedPosts} from "@utils/content-utils.ts";