refactor: Remove deprecated CodeIgniter::resolvePlatformExtensions()

Author: neznaika0

system/CodeIgniter.php

@@ -15,7 +15,6 @@
 use CodeIgniter\Cache\ResponseCache;
 use CodeIgniter\Debug\Timer;
 use CodeIgniter\Events\Events;
-use CodeIgniter\Exceptions\FrameworkException;
 use CodeIgniter\Exceptions\LogicException;
 use CodeIgniter\Exceptions\PageNotFoundException;
 use CodeIgniter\Filters\Filters;
@@ -192,38 +191,6 @@ public function initialize()
         date_default_timezone_set($this->config->appTimezone ?? 'UTC');
     }
 
-    /**
-     * Checks system for missing required PHP extensions.
-     *
-     * @return void
-     *
-     * @throws FrameworkException
-     *
-     * @codeCoverageIgnore
-     *
-     * @deprecated 4.5.0 Moved to system/bootstrap.php.
-     */
-    protected function resolvePlatformExtensions()
-    {
-        $requiredExtensions = [
-            'intl',
-            'json',
-            'mbstring',
-        ];
-
-        $missingExtensions = [];
-
-        foreach ($requiredExtensions as $extension) {
-            if (! extension_loaded($extension)) {
-                $missingExtensions[] = $extension;
-            }
-        }
-
-        if ($missingExtensions !== []) {
-            throw FrameworkException::forMissingExtension(implode(', ', $missingExtensions));
-        }
-    }
-
     /**
      * Initializes Kint
      *

user_guide_src/source/changelogs/v4.6.4.rst

@@ -22,6 +22,8 @@ Message Changes
 Changes
 *******
 
+- **CodeIgniter:** The deprecated ``resolvePlatformExtensions()`` method in ``CodeIgniter\CodeIgniter`` has been removed.
+
 ************
 Deprecations
 ************