So, yeah, PDF is the most sad format. But I have what I have

. And I need some

here! I have a big problem. For example I convert PDF to AZW3 and when I read it I get this:
(example)
(page 1)
-All original page (page size is fitted to screen).
-Then I get a part of page with normal font size to read.
-Then I get other part of page with normal font size to read.
(page 2)
-All original page (page size is fitted to screen).
-Then I get a part of page with normal font size to read.
-Then I get other part of page with normal font size to read.
(page 3, 4, etc.)
So is it possible when converting remove that original page? I mean there is no point of it and it's annoying every time when I press to read next page.

&

for every answer!