Remove statsCached from console backend

backends/console.js

@@ -6,33 +6,17 @@ function ConsoleBackend(startupTime, config, emitter){
   this.lastException = startupTime;
   this.config = config.console || {};
 
-  this.statsCache = {
-    counters: {},
-    timers: {}
-  };
-
   // attach
   emitter.on('flush', function(timestamp, metrics) { self.flush(timestamp, metrics); });
   emitter.on('status', function(callback) { self.status(callback); });
 };
 
 ConsoleBackend.prototype.flush = function(timestamp, metrics) {
-  var self = this;
   console.log('Flushing stats at', new Date(timestamp * 1000).toString());
 
-  // merge with previously sent values
-  Object.keys(self.statsCache).forEach(function(type) {
-    if(!metrics[type]) return;
-    Object.keys(metrics[type]).forEach(function(name) {
-      var value = metrics[type][name];
-      self.statsCache[type][name] || (self.statsCache[type][name] = 0);
-      self.statsCache[type][name] += value;
-    });
-  });
-
   var out = {
-    counters: this.statsCache.counters,
-    timers: this.statsCache.timers,
+    counters: metrics.counters,
+    timers: metrics.timers,
     gauges: metrics.gauges,
     timer_data: metrics.timer_data,
     counter_rates: metrics.counter_rates,