More than three years after Dublin City Council first announced plans to develop the old Pigeon House power station and hotel on the Poolbeg peninsula, it has killed the entire project off.  Yesterday, Dublin City Council (DCC) declined to explain why it had made this decision. A spokesperson said only:  “I have been advised to tell you that it would not be appropriate for us to comment at this time.”  The decision by DCC to abruptly shut everything down means that hundreds of homes will not now be built on the site. This is despite the council spending three years…