private static void removeFromExtensionHolderMap(
            String extensionKey,
            Class extension,
            ConcurrentHashMap<Class, AbstractExtensionHolder> extensionHolderConcurrentHashMap) {
        for (Class extensionSuperClass : extensionNameSpaceList) {
            if (extensionSuperClass.isAssignableFrom(extension)) {
                AbstractExtensionHolder extensionHolder = extensionHolderConcurrentHashMap.get(extensionSuperClass);
                if (extensionHolder != null) {
                    extensionHolder.removeExtension(extensionKey);
                }
            }
        }
    }
Remove extensions to Siddhi siddhiExtensionsHolderMap.

@param extensionKey                     fully qualified extension name (namespace:extensionName)
@param extension                        extension class (eg:HttpSource)
@param extensionHolderConcurrentHashMap reference map for the Siddhi extension holder
modules/siddhi-core/src/main/java/io/siddhi/core/util/SiddhiExtensionLoader.java