Remove UniqueId.SerializedForm

[mpkorstanje]

With #5205 UniqueId.uniqueIdFormat was removed. To preserve backwards compatibility w.r.t to serialization a UniqueId.SerializedForm was added. This can be removed on the next major release.

Deliverables

• Remove UniqueId.SerializedForm
• Make UniqueId.segments actually final
• Remove custom writeObject and readObject methods.

[mehulimukherjee]

Hi @marcphilipp & @mpkorstanje , could you please assign this to me? Thanks!

[mpkorstanje]

@mehulimukherjee no. This issue is scheduled for the next major release which will be v7. With v6 fresh of the press, this won't happen any time soon.