remove more caas related code

src/sysinfo/caas.js

@@ -1,31 +0,0 @@
-'use strict';
-
-exports = module.exports = {
-    getPublicIp: getPublicIp
-};
-
-var assert = require('assert'),
-    superagent = require('superagent'),
-    safe = require('safetydance'),
-    SysInfoError = require('../sysinfo.js').SysInfoError;
-
-function getPublicIp(callback) {
-    assert.strictEqual(typeof callback, 'function');
-
-    if (process.env.BOX_ENV === 'test') return callback(null, '127.0.0.1');
-
-    superagent.get('http://169.254.169.254/metadata/v1.json').timeout(30 * 1000).end(function (error, result) {
-        if (error || result.statusCode !== 200) {
-            console.error('Error getting metadata', error);
-            return callback(new SysInfoError(SysInfoError.EXTERNAL_ERROR, 'Could not detect public IP from metadata'));
-        }
-
-        // Note that we do not use a floating IP for 3 reasons:
-        // The PTR record is not set to floating IP, the outbound interface is not changeable to floating IP
-        // and there are reports that port 25 on floating IP is blocked.
-        var ip = safe.query(result.body, 'interfaces.public[0].ipv4.ip_address');
-        if (!ip) return callback(new SysInfoError(SysInfoError.EXTERNAL_ERROR, 'Could not detect public IP from interface'));
-
-        callback(null, ip);
-    });
-}