Destroy a poll group created with CreatePollGroup().
If there are any connections in the poll group, they are removed from the group,
and left in a state where they are not part of any poll group.
Returns false if passed an invalid poll group handle.
Destroy a poll group created with CreatePollGroup().
If there are any connections in the poll group, they are removed from the group, and left in a state where they are not part of any poll group. Returns false if passed an invalid poll group handle.