Clean up remaining support for 'debug' as a bool.

lib/SimpleSAML/Error/Exception.php

@@ -200,7 +200,7 @@ class Exception extends \Exception
     protected function logBacktrace(int $level = Logger::DEBUG): void
     {
         // Do nothing if backtraces have been disabled in config.
-        $debug = Configuration::getInstance()->getArrayize('debug', ['backtraces' => true]);
+        $debug = Configuration::getInstance()->getArray('debug', ['backtraces' => true]);
         if (array_key_exists('backtraces', $debug) && $debug['backtraces'] === false) {
             return;
         }

lib/SimpleSAML/Utils/XML.php

@@ -52,7 +52,7 @@ class XML
         }
 
         // see if debugging is enabled for XML validation
-        $debug = Configuration::getInstance()->getArrayize('debug', ['validatexml' => false]);
+        $debug = Configuration::getInstance()->getArray('debug', ['validatexml' => false]);
 
         if (
             !(
@@ -100,16 +100,13 @@ class XML
         }
 
         // see if debugging is enabled for SAML messages
-        $debug = Configuration::getInstance()->getArrayize('debug', ['saml' => false]);
+        $debug = Configuration::getInstance()->getArray('debug', ['saml' => false]);
 
         if (
             !(in_array('saml', $debug, true) // implicitly enabled
             || (array_key_exists('saml', $debug)
-            && $debug['saml'] === true)
-            // explicitly enabled
-            // TODO: deprecate the old style and remove it in 2.0
-            || (array_key_exists(0, $debug)
-            && $debug[0] === true)) // old style 'debug'
+            && $debug['saml'] === true) // explicitly enabled
+	    )
         ) {
             // debugging messages is disabled
             return;