From Press of Atlantic City – After months of fighting in court, the parent company of online global gambling giant PokerStars has abandoned its attempts to buy the Atlantic Club Casino Hotel. A lawyer representing the Rational Group has sent a letter notifying New Jersey casino regulators that the company is withdrawing its petition to take over the Atlantic Club. A copy of the July 17 letter was released Friday by the New Jersey Division of Gaming Enforcement to The Press of Atlantic City. “We are no longer pursuing an acquisition of the Atlantic Club,” Rational Group spokesman Eric Hollreiser…