js: key deletion after test

--

* Yet again some wrong syntax in Browsertests

lang/js/BrowserTestExtension/tests/KeyInfos.js

@@ -51,9 +51,9 @@ describe('Key information', function () {
                 const user = result.Keys[0].key.get('userids')[0];
                 expect(user.get('name')).to.equal(
                     inputvalues.publicKeyNonAscii.userid);
-                result.Keys[0].delete().then(function (){
+                result.Keys[0].key.delete().then(function (){
                     done();
                 });
             });
     });
-});
+});