Don't disallow the stallMonitor in RPC tumbler

Prior to this commit, the 'testflag' was set for the Taker object that
was created in running the tumbler via the RPC API. This flag prevents
the function client_protocol.JMTakerClientProtocol.stallMonitor from
running (which is useful in certain cases), which was not intended.
After this commit, this flag is not set, so that when a transaction
fails to go through, the stallMonitor will wake up after some time and
retry the transaction, as should occur.

jmclient/jmclient/wallet_rpc.py

@@ -1247,8 +1247,6 @@ class JMWalletDaemon(Service):
                                tdestaddrs=destaddrs)
             self.clientfactory = self.get_client_factory()
 
-            self.taker.testflag = True
-
             dhost, dport = self.check_daemon_ready()
 
             _, self.coinjoin_connection = start_reactor(dhost,