src: tidy up include headers in env.cc

PR-URL: #26815
Reviewed-By: Refael Ackermann <refack@gmail.com>

Author: gengjiawen

src/env.cc

@@ -8,7 +8,6 @@
 #include "node_internals.h"
 #include "node_native_module.h"
 #include "node_options-inl.h"
-#include "node_platform.h"
 #include "node_process.h"
 #include "node_v8_platform-inl.h"
 #include "node_worker.h"