minor #9521 [Intl] Remove ClassLoader mention (hipio)

This PR was merged into the 4.0 branch.

Discussion
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[Intl] Remove ClassLoader mention

The ClassLoader component was removed in Symfony 4.0.

Commits
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8a83cdf [FIX] Remove ClassLoader mention

Author: javiereguiluz

components/intl.rst

@@ -48,17 +48,6 @@ replace the intl classes:
 
 Composer automatically exposes these classes in the global namespace.
 
-If you don't use Composer but the
-:doc:`Symfony ClassLoader component </components/class_loader>`,
-you need to expose them manually by adding the following lines to your autoload
-code::
-
-    if (!function_exists('intl_is_failure')) {
-        require '/path/to/Icu/Resources/stubs/functions.php';
-
-        $loader->registerPrefixFallback('/path/to/Icu/Resources/stubs');
-    }
-
 Writing and Reading Resource Bundles
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