message: remove unused circle macros
diff: -run_install_sodium: &run_install_sodium
  - run:
  - name: install sodium
  - command: |
  - curl -O https://download.libsodium.org/libsodium/releases/libsodium-1.0.17.tar.gz
  - tar xf libsodium-1.0.17.tar.gz
  - cd libsodium-1.0.17/
  - ./configure
  - make && make check
  - sudo make install
  -
  run_with_build_env_vars: &run_with_build_env_vars
  environment:
  LLVM_SYS_70_PREFIX: /home/circleci/project/clang+llvm-7.0.0-x86_64-linux-gnu-ubuntu-16.04/
  @@ -21,15 +10,6 @@ run_install_dependencies: &run_install_dependencies
  curl -O https://releases.llvm.org/7.0.0/clang+llvm-7.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz
  tar xf clang+llvm-7.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz
  -save_cargo_cache: &save_cargo_cache
  - save_cache:
  - paths:
  - - /usr/local/cargo/registry
  - - target/debug/.fingerprint
  - - target/debug/build
  - - target/debug/deps
  - key: v6-lint-{{ arch }}-{{ checksum "Cargo.lock" }}
  -
  version: 2
  jobs:
  # Job used for testing
  