Remove deprecated getaddrinfo flags

The AI_IDN_ALLOW_UNASSIGNED and AI_IDN_USE_STD3_ASCII_RULES have
been deprecated by glibcs, and PHP 7.4 follows this deprecation.

This removes the offending flags for PHP 8.0.

Author: viest

UPGRADING

@@ -178,6 +178,10 @@ PHP 8.0 UPGRADE NOTES
         ReflectionFunction::invoke($arg = null, ...$args)
         ReflectionMethod::invoke($object, $arg = null, ...$args)
 
+- Socket:
+  . The deprecated AI_IDN_ALLOW_UNASSIGNED and AI_IDN_USE_STD3_ASCII_RULES
+    flags for socket_addrinfo_lookup() have been removed.
+
 - SPL:
   . SplFileObject::fgetss() has been removed.
   . SplHeap::compare($a, $b) now specifies a method signature. Inheriting

ext/sockets/sockets.c

@@ -850,8 +850,6 @@ static PHP_MINIT_FUNCTION(sockets)
 #if HAVE_AI_IDN
 	REGISTER_LONG_CONSTANT("AI_IDN",			AI_IDN,				CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("AI_CANONIDN",		AI_CANONIDN,		CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("AI_IDN_ALLOW_UNASSIGNED",		AI_IDN_ALLOW_UNASSIGNED, CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("AI_IDN_USE_STD3_ASCII_RULES",	AI_IDN_USE_STD3_ASCII_RULES, CONST_CS | CONST_PERSISTENT);
 #endif
 #ifdef AI_NUMERICSERV
 	REGISTER_LONG_CONSTANT("AI_NUMERICSERV",	AI_NUMERICSERV,		CONST_CS | CONST_PERSISTENT);
@@ -2573,14 +2571,7 @@ PHP_FUNCTION(socket_addrinfo_lookup)
 		ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(zhints), key, hint) {
 			if (key) {
 				if (zend_string_equals_literal(key, "ai_flags")) {
-					zend_long flags = zval_get_long(hint);
-#if HAVE_AI_IDN
-					if (flags & (AI_IDN_ALLOW_UNASSIGNED | AI_IDN_USE_STD3_ASCII_RULES)) {
-						php_error_docref(NULL, E_DEPRECATED,
-							"AI_IDN_ALLOW_UNASSIGNED and AI_IDN_USE_STD3_ASCII_RULES are deprecated");
-					}
-#endif
-					hints.ai_flags = flags;
+					hints.ai_flags = zval_get_long(hint);
 				} else if (zend_string_equals_literal(key, "ai_socktype")) {
 					hints.ai_socktype = zval_get_long(hint);
 				} else if (zend_string_equals_literal(key, "ai_protocol")) {