Assuming that this is a follow-on from your last question, put the cursor at the top of the blank page, and press backspace. That should put you at the bottom of the previous page. If there is still a blank page, either you have lots of empty lines below, in which case:
hold down Shift and CTRL and hit PgDn. That should highlight the entire rest of the document. Press delete to remove it.
or you have a hard page break, in which case, hit backspace repeatedly
until you are at the very last line that you want to include in the document.