Fixed healthcheck for jshint

lib/cartodb/monitoring/health_check.js

@@ -11,24 +11,9 @@ function HealthCheck(metadataBackend, tilelive) {
 module.exports = HealthCheck;
 
 
-var mapnikOptions = {
-    query: {
-        metatile: 1,
-        poolSize: 4,
-        bufferSize: 64
-    },
-    protocol: 'mapnik:',
-    slashes: true,
-    xml: null
-};
-
-var xmlTemplate = dot.template(fs.readFileSync(path.resolve(__dirname, 'map-config.xml'), 'utf-8'));
-
 HealthCheck.prototype.check = function(config, callback) {
 
-    var self = this,
-        startTime,
-        result = {
+    var result = {
             redis: {
                 ok: false
             },
@@ -39,7 +24,6 @@ HealthCheck.prototype.check = function(config, callback) {
                 ok: false
             }
         };
-    var mapnikXmlParams = config;
 
     step(
         function getManualDisable() {