Soothe "Make unserialize() warning"

See https://wiki.php.net/rfc/unserialize_warn_on_trailing_data

src/DependencySaver.php

@@ -56,6 +56,6 @@ private function saveQualifier(IpQualifier $qualifer): void
             $qualifer->param->getDeclaringFunction()->name,
             $qualifer->param->name
         );
-        ($this->filePutContents)($fileName, serialize($qualifer->qualifier) . PHP_EOL);
+        ($this->filePutContents)($fileName, serialize($qualifer->qualifier));
     }
 }