Put the token "text" in the negative prompt? Maybe "writing", "signature", "watermark", "label", etc.
EDIT: A maybe less-shotgun thing to try: use an image-editing program to cut out just the portion with the text. Install the Clip Interrogator extension in Stable Diffusion. Take the cut-out label, and insert it into img2img in Stable Diffusion. Then use Clip Interrogator. That should give you a list of tokens that will generate something like the image that you're seeing. That'll probably give you a better idea than my guesses as to what tokens are associated with the text there. Maybe it's "sign" or something like that.