dropOldestWatcher

bool dropOldestWatcher(Slot,  RemoveFn)(LimitKind kind,  scope  Slot[]  slots,
       scope  RemoveFn removeFn)

@trusted nothrow

Drop the oldest watcher matching a limit kind.

Scans all slots for the oldest registered watcher matching the limit category and removes it via the provided callback.

`kind`	Limit category to match.
`slots`	Watcher slot array to scan.
`removeFn`	Callback to remove a slot: `(uint index, ref Slot) => void`.

true if a watcher was found and removed.