The Talmud goes on to say that even if the cumin had not been properly prepared (crushed or ground) before the Sabbath, one could grind it with his teeth on the Sabbath, an act which would generally be forbidden on the Sabbath - but is permitted, presumably on account of the role the herb/spice would play in stopping the blood and healing the wound.
עושין כל צרכי מילה [בשבת] מוהלין ופורעין ומוצצין ונותנין עליה איספלנית וכמון
On the Sabbath, we do everything that needs to be done for the circumcision: Remove the foreskin, remove the membrane from the glans, draw out blood, put on a bandage and cumin.
The differences in the reading open up a debate as to whether metzitzah, which I have defined as "drawing out blood" is considered to be: a. part of the steps of the process, or b. a suggested component that the Talmud records as the best known form of helping the wound heal.
If it is the former, then metzitzah must be done at every bris [how the blood is drawn is a topic of a different discussion, and of much debate, particularly in ultra-Orthodox and some Haredi/Hassidic circles]. If it is the latter, perhaps it need not be done,