do away with vs do in

do away with

verb
  • To have someone killed. 

  • To abolish; to put an end to; to eliminate. 

do in

verb
  • To kill or end. 

  • To exhaust, to tire out. 

  • To damage or injure. 

How often have the words do away with and do in occurred in a corpus of books? (source: Google Ngram Viewer )