Remoce Xcode 9.3 test

.travis.yml

@@ -68,61 +68,6 @@ matrix:
     env: ACTION='test:appletvsimulator'
   - osx_image: xcode9.4
     env: ACTION='test:macosx'
-
-  - osx_image: xcode9.3
-    env: ACTION=build
-  - osx_image: xcode9.3
-    env: ACTION='build:carthage'
-  - osx_image: xcode9.3
-    env: ACTION='test:iphonesimulator'
-  - osx_image: xcode9.3
-    env: ACTION='test:appletvsimulator'
-  - osx_image: xcode9.3
-    env: ACTION='test:macosx'
-
-  # - osx_image: xcode9.2
-  #   env: ACTION=build
-  # - osx_image: xcode9.2
-  #   env: ACTION='build:carthage'
-  # - osx_image: xcode9.2
-  #   env: ACTION='test:iphonesimulator'
-  # - osx_image: xcode9.2
-  #   env: ACTION='test:appletvsimulator'
-  # - osx_image: xcode9.2
-  #   env: ACTION='test:macosx'
-  #
-  # - osx_image: xcode9.1
-  #   env: ACTION=build
-  # - osx_image: xcode9.1
-  #   env: ACTION='build:carthage'
-  # - osx_image: xcode9.1
-  #   env: ACTION='test:iphonesimulator'
-  # - osx_image: xcode9.1
-  #   env: ACTION='test:appletvsimulator'
-  # - osx_image: xcode9.1
-  #   env: ACTION='test:macosx'
-  #
-  # - osx_image: xcode9
-  #   env: ACTION=build
-  # - osx_image: xcode9
-  #   env: ACTION='build:carthage'
-  # - osx_image: xcode9
-  #   env: ACTION='test:iphonesimulator'
-  # - osx_image: xcode9
-  #   env: ACTION='test:appletvsimulator'
-  # - osx_image: xcode9
-  #   env: ACTION='test:macosx'
-  #
-  # - osx_image: xcode8.3
-  #   env: ACTION=build
-  # - osx_image: xcode8.3
-  #   env: ACTION='build:carthage'
-  # - osx_image: xcode8.3
-  #   env: ACTION='test:iphonesimulator'
-  # - osx_image: xcode8.3
-  #   env: ACTION='test:appletvsimulator'
-  # - osx_image: xcode8.3
-  #   env: ACTION='test:macosx'
 env:
   global:
   - LANG=en_US.UTF-8