Remove coforallOnByRef and userSync futures.

These two tests are passing now due to #293 (Update licm to hoist wide variables).  The
tests recommended different approaches to reducing comm counts, but since LICM covers the
optimization, the other approaches are more or less moot.
Merge pull request #394 from hildeth/quietHildePerfFutures

Remove coforallOnByRef and userSync futures.

These two tests are passing now due to #293 (Update licm to hoist wide variables). The
tests recommended different approaches to reducing comm counts, but since LICM covers the
optimization, the other approaches are more or less moot.