don't wait for cfn stack deletion

Change-Id: I727ad05293a2ba22974921c4a6af6c6761d4e734
diff --git a/cleanup-pipeline.groovy b/cleanup-pipeline.groovy
index 867eda8..282b041 100644
--- a/cleanup-pipeline.groovy
+++ b/cleanup-pipeline.groovy
@@ -68,7 +68,6 @@
         } else if (STACK_TYPE == 'aws') {
 
             aws.deleteStack(venv_path, env_vars, STACK_NAME)
-            aws.waitForStatus(venv_path, env_vars, STACK_NAME, 'DELETE_COMPLETE', ['DELETE_FAILED'])
 
         } else {
             throw new Exception('Stack type is not supported')