diff --git a/.github/workflows/create-release-pr.yml b/.github/workflows/create-release-pr.yml
deleted file mode 100644
index ff73480..0000000
--- a/.github/workflows/create-release-pr.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-name: Create a release PR
-
-on:
-  push:
-    branches:
-      - develop
-  workflow_dispatch:
-
-jobs:
-  create-release-pr:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: Setup Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.3.0
-
-      - name: Creates a release PR
-        env:
-          GIT_PR_RELEASE_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GIT_PR_RELEASE_BRANCH_PRODUCTION: main
-          GIT_PR_RELEASE_BRANCH_STAGING: develop
-          TZ: Asia/Tokyo
-        run: |
-          gem install -N git-pr-release -v "2.2.0"
-          git-pr-release --no-fetch
diff --git a/README.md b/README.md
deleted file mode 100644
index 72943a1..0000000
--- a/README.md
+++ /dev/null
@@ -1 +0,0 @@
-aaa
diff --git a/ccc b/ccc
deleted file mode 100644
index 8b13789..0000000
--- a/ccc
+++ /dev/null
@@ -1 +0,0 @@
-