Removed instanceOf.

I think it's time to remove MOST of the poor man's RTTI now.

lout/identity.cc

@@ -95,34 +95,5 @@ void IdentifiableObject::registerName (const char *className, const std::type_in
    currentlyConstructedClass = klass;
 }
 
-/**
- * \brief Returns, whether this class is an instance of the class, given by
- *    \em otherClassId, or of a sub class of this class.
- */
-bool IdentifiableObject::instanceOf_impl (std::intptr_t otherClassId)
-{
-   if (otherClassId == -1)
-      // Other class has not been registered yet, while it should have been,
-      // if this class is an instance of it or of a sub-class.
-      return false;
-
-   Class *otherClass = classesById.at (otherClassId);
-
-   if (otherClass == NULL) {
-      fprintf (stderr,
-               "WARNING: Something got wrong here, it seems that a "
-               "CLASS_ID was not initialized properly.\n");
-      return false;
-   }
-
-   for (Class *klass = classesById.at (classId); klass != NULL;
-        klass = klass->parent) {
-      if (klass == otherClass)
-         return true;
-   }
-
-   return false;
-}
-
 } // namespace identity
 } // namespace lout