I've successfully used pdftk to remove pages I didn't want/need in pdfs. You can download the program here
You might try something like the following. Taken from here under examples
Remove 'page 13' from in1.pdf to create out1.pdf pdftk in.pdf cat 1-12 14-end output out1.pdf
or:
pdftk A=in1.pdf cat A1-12 A14-end output out1.pdf