Revert "fetch refactoring"

This reverts commit 0122e9b456.

src/_data/webmentions.js

@@ -1,12 +1,12 @@
-const fetch = require('node-fetch')
-const { AssetCache } = require('@11ty/eleventy-fetch')
+const EleventyFetch = require('@11ty/eleventy-fetch')
 
 module.exports = async function () {
     const url = 'https://utils.coryd.dev/api/webmentions'
-    const asset = new AssetCache('webmentions_data')
-    if (asset.isCacheValid('1h')) return await asset.getCachedValue()
-    const webmentions = await fetch(url).then((res) => res.json())
-    await asset.save(webmentions, 'json')
+    const res = EleventyFetch(url, {
+        duration: '1d',
+        type: 'json',
+    })
+    const webmentions = await res
     return {
         mentions: webmentions.children,
     }