Remove a tag from my FLAC music library

I inadvertently created a tag named Catalogue# instead of Catalogue #
I ripped 20 albums before I realized it.
I have copied the catalogue numbers from Catalogue# column into the Catalogue # column and deleted the info in the Catalogue# column.
How would I ( most safely ) remove the tag Catalogue# or should I just leave it?

There are no "empty" tag-fields. If the content is gone the tag-field is gone in the file.
You can check this with a look at the extended tags (ALT-t).
There you also can delete tagfields with the red cross.

Had a look with Alt T...the Catalogue# is not there after removing the data in the field.
Thanks for responding.