To remove all page breaks from a sheet (when the number of printing pages exceed 1):
1. Select all cells in the sheet by pressing Ctrl+A. In Excel 2003, press Ctrl+A+A from a cell in the Current Region/List.
Click Select All at the corner of the sheet’s headings.
2. From the Page Layout Ribbon Menu , In Page Setup group > Break > Reset All Page Break
Screenshot // Removing All Page Breaks from the Sheet