Remove linux update notification fallback

Not needed anymore since vercel/hyper#2497
Fixes vercel/hyper#2983 (comment)

index.js

@@ -3,31 +3,10 @@ const {join: joinPath} = require('path')
 const {parse: parseUrl} = require('url')
 const {readFileSync} = require('fs')
 
-const got = require('got')
-const ms = require('ms')
 const {satisfies} = require('semver')
 
 const news = JSON.parse(readFileSync(joinPath(__dirname, 'news.json'), 'utf-8'))
 const legacyNews = JSON.parse(readFileSync(joinPath(__dirname, 'legacy-news.json'), 'utf-8'))
-let latestReleaseNews
-
-// fetches the latest release from github
-// useful because we want hyper-news to notify our linux users that a new version is
-// available – there's no auto updates there
-function fetchLatestRelease() {
-  got('https://api.github.com/repos/zeit/hyper/releases', {json: true})
-    .then(res => res.body[0])
-    .then(release => {
-      latestReleaseNews = {
-        text: `Version ${release.tag_name} is available. ${release.body.split('\n')[0]}`,
-        url: `https://github.com/zeit/hyper/releases/tag/${release.tag_name}`,
-        dismissable: true,
-        versions: [`< ${release.tag_name}`],
-        platforms: ['linux']
-      }
-    })
-    .catch(console.log)
-}
 
 const matchVersion = (versions, clientVesion) => (
   versions.some(v => v === '*' || satisfies(clientVesion, v))
@@ -37,9 +16,6 @@ const matchPlatform = (platforms, clientPlatform) => (
   platforms.some(p => p === '*' || p === clientPlatform)
 )
 
-fetchLatestRelease()
-setInterval(() => fetchLatestRelease(), ms('2m'))
-
 module.exports = trackStatusCodes(async function (req) {
   const platform = req.headers['x-hyper-platform']
   const version = req.headers['x-hyper-version']
@@ -53,15 +29,6 @@ module.exports = trackStatusCodes(async function (req) {
     return legacyNews
   }
 
-  // NOTE: if the user is running an outdated version,
-  // the update news will always be sent instead of
-  // any other news defined on news.json
-  if (platform === 'linux') {
-    if (matchVersion(latestReleaseNews.versions, version)) {
-      return {message: latestReleaseNews}
-    }
-  }
-
   const message = news.messages.find(msg => (
     matchVersion(msg.versions, version) && matchPlatform(msg.platforms, platform)
   )) || ''