By Foo Yun Chee BRUSSELS (Reuters) -Lufthansa’s bid for a minority stake in ITA Airways could reduce competition in flights to and from Italy, EU antitrust regulators warned on Tuesday, ramping up pressure on the German carrier to offer stronger remedies. Lufthansa wants to acquire a 41% stake in the state-owned Italian carrier for 325 million euros ($353.2 million) as part of a capital increase. The European Commission opened an in-depth investigation, saying the deal could reduce competition in passenger air transport services on several short-haul and long-haul routes. The EU competition en…