v2.6.6: ignore unused property

index.js

@@ -390,9 +390,6 @@ Greenlock.create = function (gl) {
           if (!gl.agreeTos) {
             throw new Error("le-sni-auto is not properly configured. Missing agreeTos");
           }
-          if (!gl.approvedDomains.length) {
-            throw new Error("le-sni-auto is not properly configured. Missing approveDomains(domain, certs, callback)");
-          }
           if (!/[a-z]/i.test(lexOpts.domain)) {
             throw new Error("le-sni-auto does not allow IP addresses by default");
           }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock",
-  "version": "2.6.5",
+  "version": "2.6.6",
   "description": "Let's Encrypt for node.js on npm",
   "main": "index.js",
   "files": [