Function device_forget_doses 

pub(crate) fn device_forget_doses(id: &str) -> String

A device whose files you removed from the folder while it no longer counted for the sharing (it left, was forgotten or replaced): forgotten by the doses too, exactly as “Forget it now” does, before its claims go (its entry too, once nothing needs it): a device whose entry no longer reads is known by its claims, as an older Sioul, and with none left the doses would doubt for it until it had been silent SILENT_DAYS. It counts again if it says anything newer. Returns what went wrong, else “”.