How to remove the text in gsm_csm_contour "contour from * to * by *"

Hi,
I am plotting a plot of overlapping several gsm_csm_contour layers onto a
gsm_csm_contour_map base map. There is a boxed text string above the
labelbar "contour from # to # by #" (# denotes a number). How can I remove
this text string?
Thanks!
Xin

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Received on Fri Jan 27 19:58:28 2012