delete vs send to the glue factory

delete

verb
  • To kill or murder. 

  • To defeat or dominate. 

  • To remove, get rid of or erase, especially written or printed material, or data on a computer or other device. 

noun
  • A remainder of a music or video release. 

  • The delete character (U+007F or %7F). 

  • A deletion. 

send to the glue factory

verb
  • To kill, usually a horse. 

  • To retire or remove from prominence, usually due to obsolescence, old age or injury. 

How often have the words delete and send to the glue factory occurred in a corpus of books? (source: Google Ngram Viewer )