remove unused code from lib.sh

On-behalf-of: @SAP christoph.mewes@sap.com

Author: xrstf

hack/lib.sh

@@ -21,17 +21,6 @@
 # receives a SIGINT
 set -o monitor
 
-# Get the operating system
-# Possible values are:
-#		* linux for linux
-#		* darwin for macOS
-#
-# usage:
-# if [ "${OS}" == "darwin" ]; then
-#   # do macos stuff
-# fi
-OS="$(echo $(uname) | tr '[:upper:]' '[:lower:]')"
-
 retry() {
   # Works only with bash but doesn't fail on other shells
   start_time=$(date +%s)
@@ -122,42 +111,6 @@ write_junit() {
 EOF
 }
 
-ensure_github_host_pubkey() {
-  # check whether we already have a known_hosts entry for Github
-  if ssh-keygen -F github.com > /dev/null 2>&1; then
-    echodate "Github's SSH host key already present."
-  else
-    local github_rsa_key
-    # https://help.github.com/en/github/authenticating-to-github/githubs-ssh-key-fingerprints
-    github_rsa_key="github.com ssh-rsa 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"
-
-    echodate "Adding Github's SSH host key to known hosts…"
-
-    mkdir -p "$HOME/.ssh"
-    chmod 700 "$HOME/.ssh"
-    echo "$github_rsa_key" >> "$HOME/.ssh/known_hosts"
-    chmod 600 "$HOME/.ssh/known_hosts"
-  fi
-}
-
-vault_ci_login() {
-  # already logged in
-  if [ -n "${VAULT_TOKEN:-}" ]; then
-    return 0
-  fi
-
-  # check environment variables
-  if [ -z "${VAULT_ROLE_ID:-}" ] || [ -z "${VAULT_SECRET_ID:-}" ]; then
-    echo "VAULT_ROLE_ID and VAULT_SECRET_ID must be set to programmatically authenticate against Vault."
-    return 1
-  fi
-
-  local token
-  token=$(vault write --format=json auth/approle/login "role_id=$VAULT_ROLE_ID" "secret_id=$VAULT_SECRET_ID" | jq -r '.auth.client_token')
-
-  export VAULT_TOKEN="$token"
-}
-
 # append_trap appends to existing traps, if any. It is needed because Bash replaces existing handlers
 # rather than appending: https://stackoverflow.com/questions/3338030/multiple-bash-traps-for-the-same-signal
 # Needing this func is a strong indicator that Bash is not the right language anymore. Also, this
@@ -182,42 +135,6 @@ append_trap() {
   fi
 }
 
-docker_logs() {
-  if [[ $? -ne 0 ]]; then
-    echodate "Printing Docker logs…"
-    cat /tmp/docker.log
-  fi
-}
-
-start_docker_daemon_ci() {
-  # DOCKER_REGISTRY_MIRROR_ADDR is injected via Prow preset;
-  # start-docker.sh is part of the build image.
-  DOCKER_REGISTRY_MIRROR="${DOCKER_REGISTRY_MIRROR_ADDR:-}" DOCKER_MTU=1400 start-docker.sh
-
-  # enable the modern buildx plugin
-  echodate "Enabling dockerx plugin…"
-  docker buildx install
-}
-
-start_docker_daemon() {
-  if docker stats --no-stream > /dev/null 2>&1; then
-    echodate "Not starting Docker again, it's already running."
-    return
-  fi
-
-  # Start Docker daemon
-  echodate "Starting Docker…"
-  dockerd > /tmp/docker.log 2>&1 &
-
-  echodate "Started Docker successfully."
-  append_trap docker_logs EXIT
-
-  # Wait for Docker to start
-  echodate "Waiting for Docker…"
-  retry 5 docker stats --no-stream
-  echodate "Docker became ready."
-}
-
 repeat() {
   local end=$1
   local str="${2:-=}"