message: ci(Circle): Remove docker_layer_caching
  CircleCI now refuses to build open source projects when this is enabled.
diff: @@ -9,7 +9,6 @@ jobs:
  build-test-deploy:
  machine:
  image: ubuntu-1604:201903-01
  - docker_layer_caching: true
  steps:
  - checkout
  - run:
  @@ -97,7 +96,6 @@ jobs:
  test-umd-example:
  machine:
  image: ubuntu-1604:201903-01
  - docker_layer_caching: true
  steps:
  - checkout
  - run:
  @@ -114,7 +112,6 @@ jobs:
  build-test-webpack-example:
  machine:
  image: ubuntu-1604:201903-01
  - docker_layer_caching: true
  steps:
  - checkout
  - run:
  @@ -132,7 +129,6 @@ jobs:
  build-test-unpkgio-example:
  machine:
  image: ubuntu-1604:201903-01
  - docker_layer_caching: true
  steps:
  - checkout
  - run:
  @@ -150,7 +146,6 @@ jobs:
  build-test-nodejs-hello-world-example:
  machine:
  image: ubuntu-1604:201903-01
  - docker_layer_caching: true
  steps:
  - checkout
  - run:
  