Where is this showing up? If this is showing within your website you have two options:
Option 1: Navigate to online store > Actions > Edit Language:
See if you can find the text you mention there and then remove it.
Option 2: you can use a Google Chrome Extension like this to search for that piece of text in the the code files and remove it.
If it’s showing elsewhere we will need more information regarding where it’s showing up and also screenshots to be able to further assist you.
Kind regards,
Diego