Remove an array field that has empty objects inside

[bigster (Nuno Ferreira)]

Hi all,

I've got a field that is an array of objects, but the object is null:

And when this situation happens i want to remove the field.
After several tries with ruby filter, conditional ifs, i can't figure out how to get the right condition to remove this field.

Anyone have this kind of problem and the solution for this?

Cheers