Remove unneeded FFI declarations

Author: hdgarrood

test/Main.js

@@ -2,8 +2,4 @@
 
 // module Test.Main
 
-exports.stdin = process.stdin;
-
-exports.stdout = process.stdout;
-
-exports.gzip = require('zlib').createGzip;
+exports.gzip = require('zlib').createGzip;