[benchmarks] Removed hard tabs in primes.pasm benchmark.
[benchmarks] Removed hard tabs in primes.pasm benchmark.

Removed several Integer PMC creations intended as out parameters for subsequent
ops.  As those ops create their own out PMCs, this allocated twice as many PMCs
as necessary.  The benchmark is now slightly more than twice as fast with no
changes to Parrot itself.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@40601 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot