chore(ci): remove manual approval gate from terraform apply

PR review is sufficient due diligence — no need for a second
approval step when merging to master.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Mohitsharma44

.github/workflows/terraform.yml

@@ -104,7 +104,6 @@ jobs:
     name: Terraform Apply
     runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/master' && github.event_name == 'push'
-    environment: production-infra
 
     steps:
       - name: Checkout repository