Adrien Plazas authored Nov 04, 2019 and Adrien Plazas committed Nov 23, 2019

There is no point in adding enum values and deprecating them in the same
version, so let's just remove them. The animations are still available
via the newly added HdyLeafletTransitionType type and the
transition-type property, so this also encourages migrating to the new
API.