Use GUID codec in all cases as it is now endianness independant

src/FeatureSet.php

@@ -42,11 +42,6 @@ use Ramsey\Uuid\Provider\TimeProviderInterface;
 class FeatureSet
 {
 
-    public static function isLittleEndianSystem()
-    {
-        return current(unpack('v', pack('S', 0x00FF))) === 0x00FF;
-    }
-
     private $disableBigNumber = false;
 
     private $disable64Bit = false;
@@ -124,7 +119,7 @@ class FeatureSet
 
     protected function buildCodec($useGuids = false)
     {
-        if ($useGuids && $this->isLittleEndianSystem()) {
+        if ($useGuids) {
             return new GuidStringCodec($this->builder);
         }