Utils: Fix unused parameter warning

Change-Id: Ibe4c866b4f3bf39999cfe43bd32287e069e51d2c
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/libs/utils/devicefileaccess.cpp

@@ -493,6 +493,8 @@ bool DesktopDeviceFileAccess::hasHardLinks(const FilePath &filePath) const
         if (s.st_nlink > 1)
             return true;
     }
+#else
+    Q_UNUSED(filePath)
 #endif
     return false;
 }