Revert "ext/posix: validate permissions argument in posix_mkfifo()"

This reverts commit 6bd97e7.

Author: devnexen

NEWS

@@ -80,8 +80,6 @@ PHP                                                                        NEWS
 
 - Posix:
   . Added validity check to the flags argument for posix_access(). (arshidkv12)
-  . Added validity check to the permissions argument for posix_mkfifo().
-    (arshidkv12)
 
 - Reflection:
   . Fixed bug GH-20217 (ReflectionClass::isIterable() incorrectly returns true

ext/posix/posix.c

@@ -621,11 +621,6 @@ PHP_FUNCTION(posix_mkfifo)
 		RETURN_FALSE;
 	}
 
-	if (mode < 0 || (mode & ~07777)) {
-		zend_argument_value_error(2, "must be between 0 and 0o7777");
-		RETURN_THROWS();
-	}
-
 	result = mkfifo(ZSTR_VAL(path), mode);
 	if (result < 0) {
 		POSIX_G(last_error) = errno;