Inconsistent naming for methods `Screen#removed` and `Screen#onDisplayed`

They are both called in `MinecraftClient#setScreen`. Side note: an unwritten rule for event/callback methods beginning with 'on' is for the method to be in present tense.

Suggestions from best to worst in my opinion:
- `Screen#onUnset` with `Screen#onSet`
- `Screen#onRemove` with `Screen#onDisplay`
- `Screen#onRemoved` with `Screen#onDisplayed`
- `Screen#removed` with `Screen#displayed`