By Lananh Nguyen and Saeed Azhar NEW YORK (Reuters) – Goldman Sachs Group Inc’s strategy pivot has solved one problem for investors who didn’t love its foray into consumer banking. Still, Wall Street is yet to be convinced if the broader reorganization will create long term benefits. In its biggest management reshuffle in years, the Wall Street giant merged its traditional mainstays — trading and investment banking — and joined its asset-management and wealth management arms. A new unit focusing on financial technology products, dubbed Platform Solutions, will make up its third operating seg…