Remove unused $LANG global variable

CHANGELOG.md

@@ -224,6 +224,7 @@ The present file will list all changes made to the project; according to the
 #### Removed
 - `GLPI_USE_CSRF_CHECK`, `GLPI_USE_IDOR_CHECK`, `GLPI_CSRF_EXPIRES`, `GLPI_CSRF_MAX_TOKENS` and `GLPI_IDOR_EXPIRES` constants.
 - `$CFG_GLPI_PLUGINS` global variable.
+- `$LANG` global variable.
 - `$PLUGINS_EXCLUDED` global variable.
 - Usage of `csrf_compliant` plugins hook.
 - Usage of `migratetypes` plugin hooks.

inc/based_config.php

@@ -318,14 +318,9 @@ function ($matches) {
 
 define('GLPI_I18N_DIR', GLPI_ROOT . "/locales");
 
+// For plugins
 /**
  * @var array $PLUGIN_HOOKS
- * @var array $LANG
  */
-global $PLUGIN_HOOKS,
-    $LANG
-;
-
-// For plugins
+global $PLUGIN_HOOKS;
 $PLUGIN_HOOKS     = [];
-$LANG             = [];

src/Plugin.php

@@ -398,7 +398,6 @@ public static function loadLang($plugin_key, $forcelang = '', $coretrytoload = '
          */
         global $CFG_GLPI, $TRANSLATE;
 
-       // For compatibility for plugins using $LANG
         $trytoload = 'en_GB';
         if (isset($_SESSION['glpilanguage'])) {
             $trytoload = $_SESSION["glpilanguage"];