We should open a ticket for that one too.

input: Remove p_playlist gc signaling now that the playlist is aware of vlc_InputSelectedStreamChanged.

This reverts commit 627aaa88.

Well, we do need to define the type first. Limitation of how we declared events.

input: No need to signal input's end to the playlist now that the playlist gets an event for that one.

(To better track when to attach/detach events).