chore: deduplicate workflows

.github/workflows/blog-posts-to-readme-manual.yaml

@@ -1,23 +0,0 @@
-name: Blog posts to readme [manual]
-on: [workflow_dispatch]
-jobs:
-  pull_blog_rss:
-    name: Update with latest blog posts
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Get RSS Feed
-        uses: kohrongying/readme-the-rss@master
-        with:
-          feed_url: https://coryd.dev/feed.xml
-          count: 5
-      - name: Commit file changes
-        run: |
-            git config --global user.name 'cdransf'
-            git config --global user.email 'coryd@hey.com'
-            git add .
-            git diff --quiet --cached || git commit -m "Update README"
-      - name: Push changes
-        uses: ad-m/github-push-action@master
-        with:
-          github_token: ${{ secrets.GH_TOKEN }}

.github/workflows/blog-posts-to-readme.yaml

@@ -1,5 +1,6 @@
 name: Blog posts to readme
 on:
+  workflow_dispatch:
   schedule:
     - cron: '0 15 * * *'
 jobs: