update render IaC template

render.yaml

@@ -6,11 +6,6 @@ services:
     autoDeploy: false
     healthCheckPath: /api/status
     repo: https://github.com/Infisical/infisical.git
-    envVars:
-      - fromGroup: backend-environment-variables
-
-envVarGroups:
-  - name: backend-environment-variables
     envVars:
       - key: ENCRYPTION_KEY
         generateValue: true