Remove the old custom ticker

lib/protocol/exchanges/custom_ticker.js

@@ -1,45 +0,0 @@
-'use strict';
-
-// TODO: refactor this with bitpay_ticker.js
-
-var https = require('https');
-var _ = require('underscore');
-
-var CustomTicker = function(config) {
-  this.config = config;
-};
-
-CustomTicker.factory = function factory(config) {
-  return new CustomTicker(config);
-};
-
-CustomTicker.prototype.ticker = function ticker(currency, cb) {
-  var self = this;
-  https.get(this.config.uri, function(res) {
-    var buf = '';
-    res.setEncoding('utf8');
-    res.on('data', function(chunk) {
-      buf += chunk;
-    })
-    .on('end', function() {
-      var json = null;
-      try {
-        json = JSON.parse(buf);
-      } catch(e) {
-        cb(new Error('Couldn\'t parse JSON response'));
-        return;
-      }
-      var rec = _.findWhere(json, {code: currency});
-
-      if (!rec) {
-        cb(new Error('Currency not listed: ' + currency));
-        return;
-      }
-      cb(null, rec.rate);
-    });
-  }).on('error', function(e) {
-    cb(e);
-  });
-};
-
-module.exports = CustomTicker;