Fix PREUPLOAD.cfg to not use -s for bpfmt

This is in-general broken and can break things,
since order matters in build files.

I've seen many CLs with this recently, so removing
from PREUPLOAD.cfg files in the tree.

Bug: N/A
Test: N/A
Flag: EXEMPT .
Change-Id: Ic50e356500f5d8a79372a55fa482baa76f1e7c37