Mrs Brown's Boys is set for more legal drama as a second star allegedly prepares to sue after being sacked from the popular sitcom.Damien McKiernan, 54, who played Rory Brown, is taking legal action over claims of unfair dismissal, bullying and discrimination, The Daily Star Sunday reports.The actor, who left the show in autumn, is the second star in a week to launch a lawsuit against the show's creator and lead actor Brendan O'Carroll who plays Agnes Brown.Scottish actor Gary Hollywood, 41, who