The Oracle of Omaha has looked east to Cincinnati and does not like what he sees. Warren Buffett, one of the world’s richest men and savviest investors, is selling nearly all of Berkshire Hathaway’s shares in Procter & Gamble. According to sources, that holding had been large enough to qualify as one of Berkshire's “big four” investments, and has been on its books for over a decade. Earlier this year, Buffett sold 99% of the P&G shares, worth $4.3 billion. Following th...