Stashing(createPageRedirectAsyncData): Remove unused redirect from asyncData function

[renoirb]

Status Cannot merge as-is.

Because it seem to break due to the early use of Vue 3 API and those files seem to be involved in not breaking the build.

---

Instead of using Nuxt pages asyncData, let's use the static site hosting redirects, and use instead createVueMetaInfo

For example (taken from when it's been made):

<script lang="ts">
  export default Vue.extend({
    // ... rest of page
    head() {
      let redirect = this.content?.redirect ?? ''
      if (redirect !== '') {
        // #TODO-Meta-Equiv-Redirect
        redirect = `/blog/${this.year}/${this.month}/${redirect}`
      }
      const out = createVueMetaInfo({ ...this.content, redirect })
      //                                               ^^^^^^^^
      return out
    },
  })
</script>

[renoirb]

Parts of this will be useful after all.

[renoirb]

Let's not delete this aspect. It'll be useful after all in #82