Remove Reactor.urlencoded.

Don't ever really use it actually. Never submit or process forms. Easy
enough to add this middleware as you need it. The `Reactor.json` and
`Reactor.auth` shortcuts are used often enough to retain them.

reactor.js

@@ -308,10 +308,6 @@ Reactor.auth = function () {
     return require('express-auth-parser')
 }
 
-Reactor.urlencoded = function () {
-    return require('body-parser').urlencoded({ extended: false, limit: '64mb' })
-}
-
 Reactor.reactor = function (object, configure, turnstile) {
     return new Reactor(object, configure, turnstile)._middleware
 }

t/shorthand.t.js

@@ -26,7 +26,6 @@ function prove (okay, callback) {
             var app = connect()
                 .use(Reactor.json())
                 .use(Reactor.auth())
-                .use(Reactor.urlencoded())
                 .use(Reactor.reactor({
                     object: 0
                 }, function (configurator) {