remove step 3

lib/cartodb/backends/template_maps.js

@@ -267,25 +267,19 @@ TemplateMaps.prototype.addTemplate = function(owner, template, callback) {
 //
 TemplateMaps.prototype.delTemplate = function(owner, tpl_id, callback) {
     var self = this;
-    step(
-        function deleteTemplate() {
-            self._redisCmd('HDEL', [ self.key_usr_tpl({ owner:owner }), tpl_id ], this);
-        },
-        function handleDeletion(err, deleted) {
-            assert.ifError(err);
-            if (!deleted) {
-                throw new Error("Template '" + tpl_id + "' of user '" + owner + "' does not exist");
-            }
-            return true;
-        },
-        function finish(err) {
-            if (!err) {
-                self.emit('delete', owner, tpl_id);
-            }
 
-            callback(err);
+    self._redisCmd('HDEL', [ self.key_usr_tpl({ owner:owner }), tpl_id ], (err, deleted) => {
+        assert.ifError(err);
+        if (!deleted) {
+            throw new Error("Template '" + tpl_id + "' of user '" + owner + "' does not exist");
         }
-    );
+
+        if (!err) {
+            self.emit('delete', owner, tpl_id);
+        }
+
+        return callback(err);
+    });
 };
 
 // Update a template