fix: remove redundant import

Author: ansidev

src/pages/tags/[slug].astro

@@ -2,7 +2,6 @@
 import { getCollection } from 'astro:content'
 import kebabCase from 'lodash.kebabcase'
 
-import LeetCodeDifficulty from '@/components/LeetCodeDifficulty.astro'
 import PostList from '@/components/post/PostList.astro'
 import siteConfig from '@/configs/site'
 import AppLayout from '@/layouts/AppLayout.astro'