Unmute test that passes

compiler/testData/codegen/box/coroutines/featureIntersection/tailrec.kt

@@ -1,6 +1,6 @@
 // WITH_RUNTIME
 // WITH_COROUTINES
-// IGNORE_BACKEND: JS, NATIVE
+// IGNORE_BACKEND: NATIVE
 import kotlin.coroutines.experimental.*
 import kotlin.coroutines.experimental.intrinsics.*
 import kotlin.test.assertEquals

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -6059,13 +6059,7 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             @TestMetadata("tailrec.kt")
             public void testTailrec() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/coroutines/featureIntersection/tailrec.kt");
-                try {
-                    doTest(fileName);
-                }
-                catch (Throwable ignore) {
-                    return;
-                }
-                throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive for that.");
+                doTest(fileName);
             }
         }