Remove fees callback parameter since txStore now sends the tx instead.
Remove fees callback parameter since txStore now sends the tx instead.

bitfloor/bitcoinjs-server,dazoe/bitcoinjs-server,bankonme/bitcoinjs-server,bankonme/bitcoinjs-server,bankonme/bitcoinjs-server,javascriptit/bitcoinjs-server,zhangweis/node-jds,zhangweis/node-jds,dazoe/bitcoinjs-server,bitfloor/bitcoinjs-server,dazoe/bitcoinjs-server,zhangweis/node-jds,javascriptit/bitcoinjs-server,javascriptit/bitcoinjs-server