Cleaners/ Maid Service
Roombas have essentially taken away the need to vacuum or sweep large areas. As the technology becomes better and cheaper, cleaning services and maids will become almost obsolete.
Airplane Pilots
The United States military has been using drones since the beginning of the Iraq War. In fact, drones may have been used as early as WWI for surveillance. People get tired and human pilots can fall asleep during long flights. In hostile environments, drones can be used to save human lives. Amazon has seen the advantages and is planning to use drones to deliver door-to-door.