ci: remove macOS builds from Travis CI

The Travis CI configuration was running macOS jobs, but macOS builds are no longer supported in Travis CI, hence removing the macOS job.

Signed-off-by: Yasir Ashfaq <Yasir.Ashfaq1@ibm.com>

Author: yasiribmcon

.travis.yml

@@ -16,19 +16,11 @@ import: mariadb-corporation/connector-test-machine:common-build.yml@master
 jobs:
   fast_finish: true
   allow_failures:
-    - os: osx
     - os: windows
     - os: linux
       arch: s390x
       dist: focal
   include:
-    - stage: Language
-      os: osx
-      compiler: clang
-      before_script:
-        - brew install openssl
-        - brew install libiodbc
-      name: "OSX"
     - stage: Language
       os: linux
       arch: s390x