3adda9d8c4
* interps.c (clear_interpreter_hooks): Do not clear deprecated_registers_changed_hook. * regcache.c (registers_changed): Do not call it. * top.c (deprecated_registers_changed_hook): Do not define it. * mi/mi-interp.c (mi_command_loop): Do not clear it. * tui/tui-hooks.c (tui_install_hooks): Do not install it. (tui_remove_hooks): Do not remove it. (tui_selected_frame_level_changed_hook): Check for negative level. Use get_selected_frame. (tui_registers_changed_hook): Deleted.