DUBLIN (Reuters) – Ryanair on Monday trimmed its profit forecast for the year to the end of March after some online travel agents stopped selling its flights in December, forcing it to cut fares to fill seats. Europe’s largest airline by passenger numbers said it expected an after-tax profit of between 1.85 billion and 1.95 billion euros ($2 billion to $2.1 billion) for the year to end-March, down from its November forecast of 1.85 billion and 2.05 billion euros. That would still beat its previous record annual after-tax profit of 1.45 billion euros in 2018. “While traffic and fares were ahead…