Gem::ConfigFile#warn_unremoved_credential

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/config_file.rb, line 856
def warn_unremoved_credential(account)
  alert_warning "Could not remove the API key for #{account} from the credential store. " \
                "It is still there and will be used instead of the one just set. " \
                "Remove it with your platform's credential manager."
end