'Removes the last line of the document.'

def remove_last_line(self):

    editor = self._editor
    text_cursor = editor.textCursor()
    text_cursor.movePosition(text_cursor.End, text_cursor.MoveAnchor)
    text_cursor.select(text_cursor.LineUnderCursor)
    text_cursor.removeSelectedText()
    text_cursor.deletePreviousChar()
    editor.setTextCursor(text_cursor)
