Remove unused Azure scripts (#618)

This were previously used for setting up azure creds for ACI specific
tests, but are no longer needed since that has moved to a separate repo.

.circleci/config.yml

@@ -25,13 +25,6 @@ jobs:
     working_directory: /go/src/github.com/virtual-kubelet/virtual-kubelet
     steps:
       - checkout
-      - run:
-          name: Create the credentials file
-          command: sh scripts/createCredentials.sh
-      - run: |
-          echo 'export AZURE_AUTH_LOCATION=${outputPathCredsfile}' >> $BASH_ENV
-      - run: |
-          echo 'export KUBECONFIG=${outputPathKubeConfigFile}' >> $BASH_ENV
       - run:
           name: Build
           command: V=1 make build