[qa] Don't set unknown rpcserialversion

qa/rpc-tests/segwit.py

@@ -86,7 +86,7 @@ class SegWitTest(BitcoinTestFramework):
     def setup_network(self):
         self.nodes = []
         self.nodes.append(start_node(0, self.options.tmpdir, ["-logtimemicros", "-debug", "-walletprematurewitness", "-rpcserialversion=0"]))
-        self.nodes.append(start_node(1, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=4", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness", "-rpcserialversion=2"]))
+        self.nodes.append(start_node(1, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=4", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness", "-rpcserialversion=1"]))
         self.nodes.append(start_node(2, self.options.tmpdir, ["-logtimemicros", "-debug", "-blockversion=536870915", "-promiscuousmempoolflags=517", "-prematurewitness", "-walletprematurewitness"]))
         connect_nodes(self.nodes[1], 0)
         connect_nodes(self.nodes[2], 1)
@@ -216,7 +216,6 @@ class SegWitTest(BitcoinTestFramework):
         assert_equal(len(segwit_tx_list), 5)
 
         print("Verify block and transaction serialization rpcs return differing serializations depending on rpc serialization flag")
-        # Note: node1 has version 2, which is simply >0 and will catch future upgrades in tests
         assert(self.nodes[2].getblock(block[0], False) !=  self.nodes[0].getblock(block[0], False))
         assert(self.nodes[1].getblock(block[0], False) ==  self.nodes[2].getblock(block[0], False))
         for i in range(len(segwit_tx_list)):