system: merge info and dmi routes

also return uptimeSecs instead of abstract date

src/routes/system.js

@@ -12,7 +12,6 @@ exports = module.exports = {
     getSystemGraphs,
     getBlockDevices,
     getCpus,
-    getDmi
 };
 
 const assert = require('assert'),
@@ -152,10 +151,3 @@ async function getCpus(req, res, next) {
 
     next(new HttpSuccess(200, { cpus }));
 }
-
-async function getDmi(req, res, next) {
-    const [error, dmi] = await safe(system.getDmi());
-    if (error) return next(BoxError.toHttpError(error));
-
-    next(new HttpSuccess(200, { dmi }));
-}