Remove includes of upward dependencies

NAPI_EXPERIMENTAL had to be removed because
it caused a NAPI_VERSION definition conflict.

Author: sparist

src/js_native_api_v8.cc

@@ -1,10 +1,6 @@
 #include <algorithm>
 #include <climits>  // INT_MAX
 #include <cmath>
-#ifndef NAPI_EXPERIMENTAL
-#define NAPI_EXPERIMENTAL
-#endif
-#include "env-inl.h"
 #include "js_native_api.h"
 #include "js_native_api_v8.h"
 #include "util-inl.h"

src/js_native_api_v8_internals.h

@@ -13,12 +13,11 @@
 // are bridged to remove references to the `node` namespace. `node_version.h`,
 // included below, defines `NAPI_VERSION`.
 
-#include "node_version.h"
+#include "util.h"
 
-#include "env.h"
 #include "gtest/gtest_prod.h"
-#include "node_errors.h"
-#include "node_internals.h"
+
+#include <v8.h>
 
 #define NAPI_ARRAYSIZE(array) node::arraysize((array))