Use the following procedure to remove a watermark from every sheet header in your workbook.
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            On the Layout tab, under Page Setup, select Header & Footer. 
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            Select Customize Header, and then select the section of the sheet header in which the watermark appears. 
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            Select the watermark, and then press Delete. 
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            Select OK, and then select OK to close the Page Setup dialog. 
 
                         
				 
				