Remove keen code

This hasn’t been running and is horribly out of date.

package.json

@@ -29,7 +29,7 @@
     "uglify-js": "~2.4"
   },
   "devDependencies": {
-    "async": "^0.9.0",
+    "async": "^1.4.2",
     "aws-sdk": "~1.5.0",
     "babel-loader": "^5.0.0",
     "babel-runtime": "^5.1.10",
@@ -51,7 +51,6 @@
     "grunt-webpack": "^1.0.8",
     "istanbul": "^0.3.0",
     "jison": "~0.3.0",
-    "keen.io": "0.0.3",
     "mocha": "~1.20.0",
     "mock-stdin": "^0.3.0",
     "mustache": "0.x",

tasks/metrics.js

@@ -1,25 +1,12 @@
 var _ = require('underscore'),
     async = require('async'),
-    git = require('./util/git'),
-    Keen = require('keen.io'),
     metrics = require('../bench');
 
 module.exports = function(grunt) {
   grunt.registerTask('metrics', function() {
     var done = this.async(),
         execName = grunt.option('name'),
-        events = {},
-
-        projectId = process.env.KEEN_PROJECTID,
-        writeKey = process.env.KEEN_WRITEKEY,
-        keen;
-
-    if (!execName && projectId && writeKey) {
-      keen = Keen.configure({
-        projectId: projectId,
-        writeKey: writeKey
-      });
-    }
+        events = {};
 
     async.each(_.keys(metrics), function(name, complete) {
         if (/^_/.test(name) || (execName && name !== execName)) {
@@ -31,33 +18,6 @@ module.exports = function(grunt) {
           complete();
         });
       },
-      function() {
-        if (!keen) {
-          return done();
-        }
-
-        emit(keen, events, function(err) {
-          if (err) {
-            throw err;
-          }
-
-          grunt.log.writeln('Metrics recorded.');
-          done();
-        });
-      });
+      done);
   });
 };
-function emit(keen, collections, callback) {
-  git.commitInfo(function(err, info) {
-    _.each(collections, function(collection) {
-      _.each(collection, function(event) {
-        if (info.tagName) {
-          event.tag = info.tagName;
-        }
-        event.sha = info.head;
-      });
-    });
-
-    keen.addEvents(collections, callback);
-  });
-}