Merge pull request #4074 from edx/jibsheet/cleanup-duplicate-key-warning

This cleans up a warning about wait being defined twice in this task

playbooks/continuous_delivery/launch_instance.yml

@@ -70,7 +70,6 @@
       key_name: "{{ automation_prefix }} {{ unique_key_name.stdout }}"
       instance_type: "{{ ec2_instance_type }}"
       image: "{{ launch_ami_id }}"
-      wait: yes
       group_id: "{{ ec2_security_group_id }}"
       count: 1
       vpc_subnet_id: "{{ ec2_vpc_subnet_id }}"