Remove set env step.

Author: emeraldjava

.github/workflows/release.yml

@@ -14,8 +14,6 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v1
-      - name: Set env
-        run: echo ::set-env name=RELEASE_VERSION::$(echo ${GITHUB_REF:10})
       - name: Setup PHP with composer v2
         uses: shivammathur/setup-php@v2
         with: