How to: Remove a manual page break.
Solution:
Select a cell just right of or just below the page break and select 'Remove Page Break' from the 'Insert' menu.
1) Select (click on) the cell just right of or just below the page break. (The cell is highlighted.)
2) Select the 'Insert' menu and select 'Remove Page Break'. (The dashed line along the top or the left side of the cell disappears.)