removing all instances of a certain value from a list

[Lee Sander]

Hi,
I have a float array ( eg [-1.3, 1.22, 9.2, None, 2.3] ) but there are
many missing vlaues which are represented as None. I would like to
remove all such instances in one go.
There is a remove function but it removes only the first instance, is
there a delete/remove all function?
thanks
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