How to Remove Someone's "@" Information from an Excel cell?

[LicensingConcierge1]

Hello Excel Team, 

I don't know how this happened, but someone's "@" name was entered on my Excel report and I can't figure out how to remove it. 

I've removed the entire row and it's still in the field.

Anyone know how to remove this please?

if I hover over the initials, a name is displayed:

This person does not know how her name was accidentally added to my report.

Thank you in advance for your help.

[#2]

@LicensingConcierge1 

This file is shared on OneDrive or Sharepoint and WM has opened the file.

When WM closes the file the information will disappear.

[#3]

@Detlef Lewin 

Ah , I see. Thank you for the fast reply. This worked perfectly!