Edit camera model. Delete

In the edit camera model setting.
I would like to know how you delete camera model makes you created. !

I have created a name and it has now totally ruined my EXIF ID on all photographs I import.

I followed this tutorial and it has ruined my workflow now.

Hi @Extremed,

I replied to you in your other post Selected camera model.

Regards,

Thanks.

Why am I getting this symbol. ?

I replied to you in your other post Selected camera model .