Hi I asume you use the Daeja viewer for that. You can set a daeja paramter in your ICN desktop configuration.
annotationHideButtons = angle,arrow,circle,freehand,highlight,highlightPoly,line,note,openPoly,oval,poly,rectangle,redact,redactPoly,restore,ruler,save,select,show,solidText,square,stamp,text,Hyperlink,Watermark

If you hide all buttons the toolbar disappear.

------------------------------
Benjamin Just
------------------------------