Make JsException Test compile with J2CL.

Change-Id: Ia1465fb99c39232d7450f84020eb9a258f920b10
diff --git a/user/test/com/google/gwt/emultest/java/lang/JsExceptionTest.java b/user/test/com/google/gwt/emultest/java/lang/JsExceptionTest.java
index 0040c55..d18843d 100644
--- a/user/test/com/google/gwt/emultest/java/lang/JsExceptionTest.java
+++ b/user/test/com/google/gwt/emultest/java/lang/JsExceptionTest.java
@@ -32,7 +32,8 @@
     return "com.google.gwt.emultest.EmulSuite";
   }
 
-  @Override
+  // Override removed here to make the test compile in J2CL.
+  // @Override
   public void runTest() throws Throwable {
     // Do not run  these tests in JVM.
     if (TestUtils.isJvm()) {