[ci] remove unnecessary package installations in CI (#6488)

.ci/setup.sh

@@ -20,9 +20,7 @@ if [[ $OS_NAME == "macos" ]]; then
  # Check https://github.com/actions/runner-images/tree/main/images/macos for available
  # versions of Xcode
  sudo xcode-select -s /Applications/Xcode_14.3.1.app/Contents/Developer || exit 1
- if [[ $TASK != "mpi" ]]; then
- brew install gcc
- fi
+ brew install gcc
  fi
  if [[ $TASK == "mpi" ]]; then
  brew install open-mpi
@@ -41,35 +39,30 @@ else # Linux
  software-properties-common
 
  sudo apt-get install --no-install-recommends -y \
- apt-utils \
  build-essential \
  ca-certificates \
  cmake \
  curl \
  git \
- iputils-ping \
- jq \
  libcurl4 \
  libicu-dev \
  libssl-dev \
- libunwind8 \
  locales \
- locales-all \
- netcat \
- unzip \
- zip || exit 1
+ locales-all || exit 1
  if [[ $COMPILER == "clang" ]]; then
  sudo apt-get install --no-install-recommends -y \
  clang \
  libomp-dev
  elif [[ $COMPILER == "clang-17" ]]; then
- sudo apt-get install wget
+ sudo apt-get install --no-install-recommends -y \
+ wget
  wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
  sudo apt-add-repository deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main
  sudo apt-add-repository deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main
  sudo apt-get update
- sudo apt-get install -y clang-17
- sudo apt-get install --no-install-recommends -y libomp-17-dev
+ sudo apt-get install -y \
+ clang-17 \
+ libomp-17-dev
  fi
 
  export LANG="en_US.UTF-8"