[PyQt] How to destroy SIGNAL

[starglider develop]

Hi,
I have a QWidgetGrid that need to response to a double click signal, but
sometimes it as the
double grid signal disconnected to allow the user to directly edit the
cells, and a itemChanged signal was
implemented, my problem is that I can't delete/destroy de signals according
to my needs.

Any help will be great.

Thank you in advance.
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