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Investor patience in Tesla is wearing thin as CEO Elon Musk shifts his focus to running Twitter.KoGuan Leo, Tesla's third largest individual shareholder, tweeted that it may be time for a new CEO."Elon abandoned Tesla and Tesla has no working CEO. Tesla needs and deserves to have working full time CEO," Leo tweeted on Wednesday.Tesla investors are growing frustrated with a falling stock price and a CEO who is splitting his time between running...