HaKatan, kol haposel b’mumo posel. Aggadata is not Halacha. In fact, Rambam (Intro/ to Perek Chelek) says that it is all metaphoric. Even regarding halachic statements, not everything is paskened.
1. The Three Oaths (@Simcha, actually they are at the end of Ketubot)are not mentioned in any of the halachic codes.
2. Rav Chaim Vital says (Intro. to Sefer Etz Chaim) that they were only for 1,000 years.
3. Rav Meir Simcha says that since the San Remo Conference establishing a Jewish state in EY is not rebellion.
4. The goyim violated their part of the bargain not to persecute us “too much” on several occasions (the Crusades, Gezerot Tach v’Tat, the pogroms, the Holocaust). Thus, the deal is off.
5. Rav Soloveichik says (Kol Dodi Dofek) that Hashem has called.
We do not concede that they have ever been practical halacha. we merely ad that even if they were they are no longer in force.