Prohibit callable references to object members

To be able to make them more useful in the future, i.e. bound to the object
instance

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

@@ -114,10 +114,6 @@ public final class FunctionCallableReferenceTest extends AbstractCallableReferen
         checkFooBoxIsOk();
     }
 
-    public void testClassMemberOverriddenInObject() throws Exception {
-        checkFooBoxIsOk();
-    }
-
     public void testClassMemberAndExtension() throws Exception {
         checkFooBoxIsOk();
     }