Is it possible without deleting the field?

Yes, it is possible. I found a very simple solution while searching.

I will show you the code, and some explanation, and then provide you with a link to the source.

This solution can be applied to all fields, you just need to adjust for how they are setup in the database.

Oh to say goodbye to an old friend, is coming sooner than I would like. But, like a Phoenix, it makes way for something better and greater for the good of everyone involved.

Wow, that was deep

On February 25th, a release came out about the End of life (EOL) for Drupal 7 (D7).