Remove parameter now for last-modified-header

lib/cartodb/api/map/anonymous-map-controller.js

@@ -96,7 +96,7 @@ module.exports = class AnonymousMapController {
             cacheControlHeader({ ttl: global.environment.varnish.layergroupTtl || 86400, revalidate: true }),
             cacheChannelHeader(),
             surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
-            lastModifiedHeader({ now: true }),
+            lastModifiedHeader(),
             lastUpdatedTimeLayergroup(),
             layerStats(this.pgConnection, this.statsBackend),
             layergroupIdHeader(this.templateMaps, useTemplateHash),

lib/cartodb/api/middlewares/last-modified-header.js

@@ -1,4 +1,4 @@
-module.exports = function setLastModifiedHeader ({ now = false } = {}) {
+module.exports = function setLastModifiedHeader () {
     return function setLastModifiedHeaderMiddleware(req, res, next) {
         if (req.method !== 'GET') {
             return next();
@@ -15,13 +15,6 @@ module.exports = function setLastModifiedHeader ({ now = false } = {}) {
             return next();
         }
 
-        // REVIEW: to keep 100% compatibility with maps controller
-        if (now) {
-            res.set('Last-Modified', new Date().toUTCString());
-
-            return next();
-        }
-
         mapConfigProvider.getAffectedTables((err, affectedTables) => {
             if (err) {
                 global.logger.warn('ERROR generating Last Modified Header:', err);

lib/cartodb/api/template/named-template-controller.js

@@ -101,7 +101,7 @@ module.exports = class NamedMapController {
             cacheControlHeader({ ttl: global.environment.varnish.layergroupTtl || 86400, revalidate: true }),
             cacheChannelHeader(),
             surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
-            lastModifiedHeader({ now: true }),
+            lastModifiedHeader(),
             lastUpdatedTimeLayergroup(),
             layerStats(this.pgConnection, this.statsBackend),
             layergroupIdHeader(this.templateMaps ,useTemplateHash),