message: Improve performance of bip68-112-113-p2p
  We shave about 70 seconds of run time by taking out the sleep.
  Since the comptool issue was resolved, we no longer need the
  sleep.
diff: @@ -205,7 +205,6 @@ class TestManager(object):
  blockhash in node.block_request_map and node.block_request_map[blockhash]
  for node in self.test_nodes
  )
  - time.sleep(1) # The BU xthin preferential thinblock timer will delay sync so we need to wait longer for sync
  # --> error if not requested
  if not wait_until(blocks_requested, attempts=20*num_blocks):
  # print [ c.cb.block_request_map for c in self.connections ]
  