ci: remove outdated travis-specific code (#16869)

ci/before_install.sh

@@ -17,8 +17,7 @@ echo 'Python info:'
   pyenv versions
 ) 2>&1 | sed 's/^/  /' || true
 
-# Use pyenv, but not for OSX on Travis, where it only has the "system" version.
-if [[ "${TRAVIS_OS_NAME}" != osx ]] && command -v pyenv; then
+if command -v pyenv; then
   echo 'Setting Python versions via pyenv'
 
   # Prefer Python 2 over 3 (more conservative).
@@ -38,7 +37,7 @@ fi
 
 echo "Install node (LTS)"
 
-if [[ "${TRAVIS_OS_NAME}" == osx ]] || [ ! -f ~/.nvm/nvm.sh ]; then
+if [ ! -f ~/.nvm/nvm.sh ]; then
   curl -o ~/.nvm/nvm.sh https://raw.githubusercontent.com/creationix/nvm/master/nvm.sh
 fi
 

ci/before_script.sh

@@ -6,12 +6,6 @@ set -o pipefail
 CI_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "${CI_DIR}/common/build.sh"
 
-# Enable ipv6 on Travis. ref: a39c8b7ce30d
-if test -n "${TRAVIS_OS_NAME}" && ! test "${TRAVIS_OS_NAME}" = osx ; then
-  echo "before_script.sh: enable ipv6"
-  sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=0
-fi
-
 # Test some of the configuration variables.
 if [[ -n "${GCOV}" ]] && [[ ! $(type -P "${GCOV}") ]]; then
   echo "\$GCOV: '${GCOV}' is not executable."
@@ -27,13 +21,6 @@ ccache -s
 # Reset ccache stats for real results in before_cache.
 ccache --zero-stats
 
-if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
-  # Adds user to a dummy group.
-  # That allows to test changing the group of the file by `os_fchown`.
-  sudo dscl . -create /Groups/chown_test
-  sudo dscl . -append /Groups/chown_test GroupMembership "${USER}"
-fi
-
 # Compile dependencies.
 build_deps
 

ci/install.sh

@@ -8,10 +8,6 @@ if [[ "${CI_TARGET}" == lint ]]; then
   exit
 fi
 
-if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
-  export PATH="/usr/local/opt/ccache/libexec:$PATH"
-fi
-
 # Use default CC to avoid compilation problems when installing Python modules.
 echo "Install neovim module for Python 3."
 CC=cc python3 -m pip -q install --user --upgrade pynvim

ci/script.sh

@@ -3,14 +3,7 @@
 set -e
 set -o pipefail
 
-# This will pass the environment variables down to a bash process which runs
-# as $USER, while retaining the environment variables defined and belonging
-# to secondary groups given above in usermod.
-if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
-  sudo -E su "${USER}" -c "ci/run_${CI_TARGET}.sh"
-else
-  ci/run_${CI_TARGET}.sh
-fi
+ci/run_${CI_TARGET}.sh
 
 if [[ -s "${GCOV_ERROR_FILE}" ]]; then
   echo '=== Unexpected gcov errors: ==='