Can't remove line with arrow in excel spreadsheet

I received a spreadsheet from someone that has a line with an arrow that is pointing from one cell to another.  It doesn't appear to be a shape as I can't click on it to delete it.  I have attached a screenshot.  

I was hoping someone could tell me what this is and how I can delete it.

Garry WilmethOwnerAsked:
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Roy CoxGroup Finance ManagerCommented:
Is the sheet protected?
Garry WilmethOwnerAuthor Commented:
No, the sheet is not protected.
Roy CoxGroup Finance ManagerCommented:
Can you attach the workbook?
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Garry WilmethOwnerAuthor Commented:
It looks like it was a comment in a hidden cell.  I apologize for wasting your time... I am a little sleep deprived today!



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Roy CoxGroup Finance ManagerCommented:
No problem and thanks for letting us know what it was.
Garry WilmethOwnerAuthor Commented:
After further investigation I found hidden cells that contained comments.
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