How do i delete items from the image info?

[Sarkoy]

I am working with some FITS images and am converting various images between being signed and unsigned.  I want to delete BZERO from the header so that others who view the images are not confused.

Does anyone know how this might be done?  I am aware that you can create a string of the values in the header from the function header=getImageInfo().  Is this the right path to head down?

Thanks.