input_c demo_mode: second phantom-switch source with a RESET deadlock

The interactive build had its OWN autoplay (09ag-23): RESET held f=10-270, fire/joystick pump after, latched off on first keypress — but a keypress DURING the hold window latched it off with key_reset still 1, pinning GAME RESET low forever (game locked in init, no select screen, no control). Removed entirely; window title now carries the key legend (Arrows/Z/Space/Enter=RESET/Tab=SELECT/F12=Power).

Raw traces, ROM material, local paths, and personal data are not part of this public record.