qa: wait_for_verack by default

test/functional/rpc_blockchain.py

@@ -256,12 +256,8 @@ class BlockchainTest(BitcoinTestFramework):
 
     def _test_waitforblockheight(self):
         self.log.info("Test waitforblockheight")
-
         node = self.nodes[0]
-
-        # Start a P2P connection since we'll need to create some blocks.
         node.add_p2p_connection(P2PInterface())
-        node.p2p.wait_for_verack()
 
         current_height = node.getblock(node.getbestblockhash())['height']