Update syntax for final PR review and remove redundant line

Author: ce0la

.github/workflows/deploy-env.yaml

@@ -34,7 +34,7 @@ on:
 
 jobs:
   deploy:
-    environment: ${{ inputs.environment || 'ops-preview-1@us-east-1' }}
+    environment: ${{ inputs.environment }}
     runs-on: ubuntu-latest
     steps:
       - name: 📥 Checkout repository
@@ -46,8 +46,7 @@ jobs:
       - name: 🚀 Deploy
         run: |
           echo "${{ secrets.ENVRC }}" > .envrc.local
-          source .envrc.local
-          nix develop -L --command bash -c "
+          nix develop -L --command bash -c '
             set -euo pipefail
-            echo "yes" | nix run .#cardano-services.${{ inputs.environment || 'ops-preview-1@us-east-1' }}.apply
-          "
+            echo "yes" | nix run .#cardano-services.${{ inputs.environment }}.apply
+          '