Remove Travis Minishift boot scripts

- The "none" VM driver is not supported by Minishift unlike Minikube so this is not possible

.travis.yml

@@ -14,18 +14,6 @@ scala:
 
 jdk:
   - oraclejdk8
-# Thanks: https://blog.travis-ci.com/2017-10-26-running-kubernetes-on-travis-ci-with-minikube
-
-before_script:
-  - curl -LO https://storage.googleapis.com/kubernetes-release/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl
-  - chmod +x kubectl && sudo mv kubectl /usr/local/bin/
-  - curl -Lo minishift-${MINISHIFT_VERSION}-linux-amd64.tgz https://github.com/minishift/minishift/releases/download/v${MINISHIFT_VERSION}/minishift-${MINISHIFT_VERSION}-linux-amd64.tgz
-  - tar -xzf minishift-${MINISHIFT_VERSION}-linux-amd64.tgz
-  - chmod +x minishift-${MINISHIFT_VERSION}-linux-amd64/minishift && sudo mv minishift-${MINISHIFT_VERSION}-linux-amd64/minishift /usr/local/bin/
-  - sudo minishift start --vm-driver=none --kubernetes-version=v${KUBECTL_VERSION}
-  - minishift update-context
-  - JSONPATH='{range .items[*]}{@.metadata.name}:{range @.status.conditions[*]}{@.type}={@.status};{end}{end}'; \
-      until kubectl get nodes -o jsonpath="$JSONPATH" 2>&1 | grep -q "Ready=True"; do sleep 1; done
 
 script:
   - cd gyoi && sbt clean test