check for prime powers in ASSERT() now, and removed unused code in #if 0
check for prime powers in ASSERT() now, and removed unused code in #if 0

This yields a speedup of almost 10 in reading the algebraic factor base!

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs