GREP : delete word only if they are the last of the line

Hi ! 

I'm trying to automate the creation of business cards.
For this, I use data merging, then apply GREP commands to finalize, but I have some difficulties with GREP :

When my data merge table has empty boxes, I end up with lines containing only the title (for example: "Tel", "Mel"...) which I want to disappear.

Here is the command I make:
Tel. : \r|Port. : \r|Mél : \r

This works perfectly for the first 2 lines, but not on the last line since there is no paragraph break.
I don't know how to search for "Mél : " specifying that it must be selected only if there is no text on the rest of the line.

Obviously I don't want to delete the title "Mél : " if there is an email address after.

Any idea to help me with this ? 🙂