NRL-1594 Remove previous extra env variable

Author: axelkrastek1-nhs

.github/workflows/pr-env-deploy.yml

@@ -288,8 +288,6 @@ jobs:
 
       - name: Configure Dev Account Credentials
         uses: aws-actions/configure-aws-credentials@7474bc4690e29a8392af63c5b98e7449536d5c3a #v4.3.1
-        env:
-          DEPLOY_ROLE_ARN: ${{ secrets.DEPLOY_ROLE_ARN }}
         with:
           aws-region: eu-west-2
           role-chaining: true