For those in the web client, the option is now available. I kept looking in "Settings" but you have to click on the three dots, "..." in the upper right hand corner of the editor. It should be right above the "AI EDIT" button.
When you click on that you will see a drop down menu with an option called "Slash commands". Click on that and you will see an option to "Hide inline hint". Hope that helps people who were having a hard time finding it in the web client.