I'm guessing that you are talking about the PDF form (and not the web/HTML form).
Open you form in the FormsCentral and go to the Design Tab.
Then look under the View menu in the top right corner and choose "Page View".
The Page View is for the PDF form. Remove any unwanted Page Breaks elements. Note that the Page Break elements are specific to their views. This means that Page Break elements added/removed from the Page View don't affect the Web form and Page Break elements added/removed from the Web View don't affect the PDF form.
Hope this helps