Remove obsolete Travis CI YML.
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index b1ae52a..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,75 +0,0 @@
-# Copyright 2016-2021 The Khronos Group Inc.
-# SPDX-License-Identifier: Apache-2.0
-
-language:
-  - cpp
-  - python
-
-python: 3.9
-
-matrix:
-  include:
-    - os: linux
-      dist: trusty
-      compiler: gcc
-      env:
-        - GENERATOR="Unix Makefiles"
-        - ARTIFACT=gcc-trusty-64bit
-    - os: linux
-      dist: trusty
-      compiler: clang
-      env:
-        - GENERATOR="Unix Makefiles"
-        - ARTIFACT=clang-trusty-64bit
-    - os: osx
-      compiler: clang
-      osx_image: xcode10
-      env:
-        - GENERATOR="Unix Makefiles"
-        - ARTIFACT=clang-macos-64bit
-    - os: windows
-      before_install:
-        - choco install python3
-        - export PATH="/c/Python39:/c/Python39/Scripts:$PATH"
-      env:
-        - GENERATOR="Visual Studio 15 2017"
-        - ARTIFACT=vs2017-32bit
-    - os: windows
-      before_install:
-        - choco install python3
-        - export PATH="/c/Python39:/c/Python39/Scripts:$PATH"
-      env:
-        - GENERATOR="Visual Studio 15 2017 Win64"
-        - ARTIFACT=vs2017-64bit
-
-before_script:
-  - "./checkout_glslang_spirv_tools.sh"
-
-script:
-  - if [[ "$TRAVIS_OS_NAME" == "windows" ]]; then PYTHON3=$(which python); fi
-  - if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then PYTHON3=$(which python3); fi
-  - "./build_glslang_spirv_tools.sh Release"
-  - mkdir build
-  - cd build
-  - cmake .. -DSPIRV_CROSS_WERROR=ON -DSPIRV_CROSS_MISC_WARNINGS=ON -DSPIRV_CROSS_SHARED=ON -DCMAKE_INSTALL_PREFIX=output -DCMAKE_BUILD_TYPE=Release -G "${GENERATOR}" -DPYTHON_EXECUTABLE:FILEPATH="${PYTHON3}" -DSPIRV_CROSS_ENABLE_TESTS=ON
-  - cmake --build . --config Release
-  - cmake --build . --config Release --target install
-  - ctest --verbose -C Release
-  - cd ..
-
-before_deploy:
-  - REV=${ARTIFACT}-$(git rev-parse --short=10 HEAD)
-  - cd build/output
-  - tar cf spirv-cross-${REV}.tar *
-  - gzip spirv-cross-${REV}.tar
-  - cd ../..
-  - export FILE_TO_UPLOAD=build/output/spirv-cross-${REV}.tar.gz
-
-deploy:
-  provider: releases
-  api_key:
-    secure: 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
-  file: "${FILE_TO_UPLOAD}"
-  skip_cleanup: true
-  on:
-    tags: true