Bug 1595049 - Part 2: Enable some tests by default. r=arai

Drive-by change, noticed while adding the test in part 1.

Depends on D52346

Differential Revision: https://phabricator.services.mozilla.com/D52347

--HG--
extra : moz-landing-system : lando

js/src/tests/non262/AsyncGenerators/async-generator-declaration-in-modules.js

@@ -1,5 +1,3 @@
-// |reftest| module skip-if(release_or_beta)
-
 async function* f() {
     return "success";
 }

js/src/tests/non262/AsyncGenerators/for-await-bad-syntax.js

@@ -1,5 +1,3 @@
-// |reftest| skip-if(release_or_beta)
-
 var AsyncGenerator = async function*(){}.constructor;
 
 function assertSyntaxError(code) {

js/src/tests/non262/Promise/allSettled.js

@@ -1,5 +1,3 @@
-// |reftest| skip-if(!Promise.allSettled)
-
 // Smoke test for `Promise.allSettled`, test262 should cover the function in
 // more detail.
 

js/src/tests/non262/String/matchAll.js

@@ -1,5 +1,3 @@
-// |reftest| skip-if(!String.prototype.matchAll)
-
 // Basic surface tests.
 
 assertEq(typeof String.prototype.matchAll, "function");