Sources: China has told SoftBank it will not allow the $5.4B acquisition of ABB's robotics division to go ahead; China is the division's biggest market (David Keohane/Financial Times)

David Keohane / Financial Times: Sources: China has told SoftBank it will not allow the $5.4B acquisition of ABB's robotics division to go ahead; China is the division's biggest market — Swiss-Swedish company's unit is focused on Chinese market and has mega-factory in Pudong — China has told…