Remove no longer needed health check params

lib/cartodb/cartodb_windshaft.js

@@ -193,7 +193,7 @@ var CartodbWindshaft = function(serverOptions) {
 
         if (!!healthConfig.enabled) {
             var startTime = Date.now();
-            healthCheck.check(healthConfig, function(err) {
+            healthCheck.check(function(err) {
                 var ok = !err;
                 var response = {
                     enabled: true,

lib/cartodb/monitoring/health_check.js

@@ -8,7 +8,7 @@ function HealthCheck(disableFile) {
 module.exports = HealthCheck;
 
 
-HealthCheck.prototype.check = function(config, callback) {
+HealthCheck.prototype.check = function(callback) {
 
     var self = this;
 

test/acceptance/health_check.js

@@ -59,7 +59,7 @@ describe('health checks', function () {
         callback(null, "Maintenance");
       };
       
-      healthCheck.check(null, function(err/*, result*/) {
+      healthCheck.check(function(err) {
         assert.equal(err.message, "Maintenance");
         assert.equal(err.http_status, 503);
         done();