Removed unnecessary auth in config.sh

runner_scripts/root/config.sh

@@ -2,42 +2,6 @@
 set -euf -o pipefail
 shopt -s inherit_errexit
 
-hash id
-hash diff
-hash ssh-keygen
-hash runuser
-
-function error {
-    : "${RV:=${2:-$BUILD_FAILURE_EXIT_CODE}}"
-    echo "$1" >&2
-    return "$RV"
-}
-
-## User authentication
-
-: "${CUSTOM_ENV_AUTH_USER:?"AUTH_USER CI/CD variable has not been set."}"
-: "${CUSTOM_ENV_AUTH_KEY:?"AUTH_KEY CI/CD variable has not been set."}"
-
-AUTH_USER=$CUSTOM_ENV_AUTH_USER
-
-## Check if the user exists and the validity of its ID
-id -u "$AUTH_USER" >/dev/null 2>&1 || error "User $AUTH_USER does not exist"
-(( $(id -u "$AUTH_USER") >= 1000 )) || error "User $AUTH_USER ID within system reserved range."
-
-## Use a key pair to authenticate the user (private key has to be set as a GitLab CI/CD variable)
-AUTH_KEY=$CUSTOM_ENV_AUTH_KEY
-AUTH_PUB=/etc/gitlab-runner/authorized_keys
-
-(
-while read -r PUB
-do
-    diff --color=never <(ssh-keygen -y -e -f /dev/stdin <<< "$AUTH_KEY") <(ssh-keygen -y -e -f /dev/stdin <<< "$PUB") > /dev/null && exit 0
-done < "$AUTH_PUB"
-exit 1
-) || error "Authentication failed."
-
-### Env setup
-
 AUTH_USER_WORK=$(runuser "$AUTH_USER" --login --command "echo \$WORK")
 
 : "${AUTH_USER_WORK:?"Could not determine $AUTH_USER's \$WORK directory."}"