[Cache] Remove PhpArrayAdapter::throwOnRequiredClass()

src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php

@@ -413,42 +413,4 @@ EOF;
             yield from $this->pool->getItems($fallbackKeys);
         }
     }
-
-    /**
-     * @throws \ReflectionException When $class is not found and is required
-     *
-     * @internal to be removed in Symfony 5.0
-     */
-    public static function throwOnRequiredClass($class)
-    {
-        $e = new \ReflectionException("Class $class does not exist");
-        $trace = $e->getTrace();
-        $autoloadFrame = [
-            'function' => 'spl_autoload_call',
-            'args' => [$class],
-        ];
-        $i = 1 + array_search($autoloadFrame, $trace, true);
-
-        if (isset($trace[$i]['function']) && !isset($trace[$i]['class'])) {
-            switch ($trace[$i]['function']) {
-                case 'get_class_methods':
-                case 'get_class_vars':
-                case 'get_parent_class':
-                case 'is_a':
-                case 'is_subclass_of':
-                case 'class_exists':
-                case 'class_implements':
-                case 'class_parents':
-                case 'trait_exists':
-                case 'defined':
-                case 'interface_exists':
-                case 'method_exists':
-                case 'property_exists':
-                case 'is_callable':
-                    return;
-            }
-        }
-
-        throw $e;
-    }
 }