A former executive who guided his bank through what was then the largest financial services transaction in history is entitled to a $2 million bonus, a state appeals panel ruled.Plaintiff Robert D. Schultze took issue with the $200,000 bonus he received for his performance in 2008, where he was essentially the point person for Dutch bank ABN Amro’s sale of its North American assets — including Chicago’s LaSalle Bank — to a consortium of other institutions.Schultze sued ABN Amro and Royal Bank of …