take off unneccessary code

lib/core.js

@@ -1,43 +1,7 @@
-
-var fs = require('fs');
 var os = require('os');
 var path = require('path');
 var binary = require('node-pre-gyp');
 var binding_path = binary.find(path.resolve(path.join(__dirname, '..', 'package.json')));
 var binding = require(binding_path);
 
-var BrigCore = binding;
-/*
-try {
-	BrigCore = require(__dirname + '/../build/Release/brig.node');
-} catch(err) {
-//	console.log(err);
-}
-
-if (!BrigCore) {
-
-	var apiVer = process.versions.modules;
-	var arch = process.arch;
-
-	// Support ARM architecture
-	if (arch == 'arm') {
-		arch += 'v' + process.config.variables.arm_version;
-		if (os.endianness() == 'LE') {
-			arch += 'l';
-		} else {
-			arch += 'b';
-		}
-	}
-
-	if (!BrigCore) {
-		try {
-			// Try to use the last version
-			BrigCore = require('../native/' + process.platform + '-' + arch + '-' + apiVer + '/brig.node');
-		} catch(err) {
-			throw new Error('Please use \'node-gyp rebuild\' to compile binary by yourself.');
-		}
-	}
-}
-*/
-
-module.exports = BrigCore;
+module.exports = binding;