By Foo Yun Chee BRUSSELS (Reuters) – U.S. online retailer Amazon is not liable for the sale of counterfeit Louboutin shoes on its platform, an adviser to Europe’s top court said on Thursday, a potential setback for the shoemaker known for its red sole shoes popular with celebrities. The case dated from 2019 when Louboutin sought an injunction against Amazon in a Belgian and a Luxembourg court, saying the company regularly displays on its websites advertisements for red-soled shoes put on the market without its consent. Both courts had sought the guidance of the Luxembourg-based Court of Justic…