Man pages matching name xcb_randr_delete_output_mode in section 3:

xcb_randr_delete_output_mode.3.en	debian 10 / libxcb-doc
xcb_randr_delete_output_mode.3.en	debian 11 / libxcb-doc
xcb_randr_delete_output_mode.3.en	debian 12 / libxcb-doc