From Longman Dictionary of Contemporary Englishdo away with somebody/something phrasal verb1 GET RID OFto get rid of something or stop using it People thought that the use of robots would do away with boring low-paid factory jobs.2 informalKILL to kill someone → do→ See Verb table
Examples from the Corpus
do away with • Davis, though, did away with all that.• Inexpensive wire frames and pull-out baskets do away with conventional chests of drawers; all available in cool white or chic black.• His design does away with the latter's camshafts and valves.• The major production innovation at Kalmar has been to do away with the track.• To do away with this would be to lose the flexibility and potential of the whole system. 