* upstart/message.h: Remove the UPSTART_SHUTDOWN message. * upstart/message.c (upstart_message_new, upstart_message_handle): Remove handling for the shutdown message. * upstart/tests/test_message.c (test_new, test_handle): Remove tests against the shutdown message. * init/control.c (control_shutdown): Remove the shutdown command from the server. * init/tests/test_control.c (test_shutdown): Remove tests for it. * init/event.h: Remove the shutdown event. * util/initctl.c: Remove the shutdown command reference. * util/events.c (shutdown_action): Remove the command. * util/events.h: Update. * util/tests/test_events.c (test_shutdown_action): Remove tests.