By Francesca Landini PARMA, Italy (Reuters) -The European Central Bank (ECB) will keep a flexible approach as it unwinds its ultra-expansionary monetary policy, monitoring not only inflation threats but also risks of uneven financing conditions across euro zone countries, a top policymaker said. ECB Governing Council member Ignazio Visco told a conference that the impact of the energy price shock should gradually wane in 2023, provided inflation expectations remain anchored and in the absence of a wage-price spiral. Visco, also Bank of Italy governor, said inflation pressures had turned out to…