Convicted drugs dealer Pat McCadden, 52, was celebrating yesterday after being told he will not face trial.The former shoe importer, nicknamed Pat the Rat, was arrested three years after the officer was gunned down in the Costa del Sol resort of Marbella.He spent nearly seven months on remand in jail before being released on bail while a judicial probe continued.A judge has now dismissed the case against the Glaswegian after witnesses failed to identify him and he was told DNA found in a getaway car used by the gunman did not match the Scot's.Judge Gonzalo Divar made the decision after a request to stay proceedings against McCadden by his lawyer Javier Muriel.Muriel said yesterday : "Pat is very pleased with the news."It's been a very long and painful process, with all the problems associated with being publicly identified in relation to such an unpleasant matter as this.