(Bloomberg) -- The Bank of Japan is widely expected to scrap the world’s last negative interest rate in the coming weeks, marking the closing act of global central banks’ grand experiment with unorthodox policies.Most Read from BloombergOne of the Most Infamous Trades on Wall Street Is Roaring BackThese Are the Best Countries for Wealthy Expats‘Oppenheimer’ Wins Seven Oscars Including Best Picture, DirectorSlow US Inflation Retreat Is Set to Bolster Fed Patience on Rate CutsGovernor Kazuo Ueda i