What does 'do away' mean? Is it an idiom or a phrasal verb?

[Ranyp]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #559 "English Slang Idioms (197)", question 3

"We are going to have to ......... away with our typewriter department. Typewriters are pretty much obsolete and demand for them has certainly waned. It is no longer profitable to keep them as one of the products we offer," Jack said to Tim.

(a) move
(b) push
(c) do
(d) erase

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #559 "English Slang Idioms (197)", answer 3

"We are going to have to do away with our typewriter department. Typewriters are pretty much obsolete and demand for them has certainly waned. It is no longer profitable to keep them as one of the products we offer," Jack said to Tim.

Correct answer: (c) do
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What does 'do away' mean? Is it an idiom or a phrasal verb?

[MrPedantic]

Hello Ranyp,

The verb is "do away with". "To do away with X" can mean "to murder X", or "to withdraw X from use", depending on the context.

Best wishes,

MrP