Using pre-existing docker binaries for contract testing job

.circleci/config.yml

@@ -200,15 +200,6 @@ jobs:
     machine:
       docker_layer_caching: true
     steps:
-      - run:
-          name: Install Docker Compose
-          command: |
-            set -x
-            bash -c "curl -L https://github.com/docker/compose/releases/download/1.11.2/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose"
-            chmod +x /usr/local/bin/docker-compose
-      - run:
-          name: Docker info
-          command: docker -v
       - run:
           name: Docker compose info
           command: docker-compose -v