Remove macOS build on travis-ci (#686)

* Remove macOS build on travis-ci
* Remove travis-ci macOS from docs/examples

examples/travis-ci-deploy.yml

@@ -7,9 +7,6 @@ jobs:
   include:
     # perform a linux build
     - services: docker
-    # and a mac build
-    - os: osx
-      language: shell
     # and a windows build
     - os: windows
       language: shell

examples/travis-ci-minimal.yml

@@ -13,9 +13,6 @@ jobs:
     # perform a linux S390X build
     - services: docker
       arch: s390x
-    # and a mac build
-    - os: osx
-      language: shell
     # and a windows build
     - os: windows
       language: shell

examples/travis-ci-test-and-deploy.yml

@@ -60,16 +60,6 @@ jobs:
       after_success: |
         python3 -m pip install twine
         python3 -m twine upload --skip-existing wheelhouse/*.whl
-    # Deploy on mac
-    - stage: deploy
-      name: Build and deploy macOS wheels
-      os: osx
-      language: shell
-      install: python3 -m pip install cibuildwheel==1.11.0
-      script: python3 -m cibuildwheel --output-dir wheelhouse
-      after_success: |
-        python3 -m pip install twine
-        python3 -m twine upload --skip-existing wheelhouse/*.whl
     # Deploy on windows
     - stage: deploy
       name: Build and deploy Windows wheels