remove export env

Author: Akol125

azure/azure-pr-teardown-pipeline.yml

@@ -49,7 +49,6 @@ jobs:
 
           cd terraform
           terraform workspace select $(WORKSPACE)
-          export ENVIRONMENT=$(WORKSPACE)
           make init-reconfigure && make destroy aws_account_no=${account_id} environment=$(WORKSPACE)
         displayName: Destroy terraform PR workspace and linked resources
         retryCountOnTaskFailure: 2