remove appimage platform again, not supported by electron auto-updater

Author: juliangruber

index.js

@@ -87,7 +87,6 @@ class Updates {
 
 const assetPlatform = fileName => {
   if (/.*(mac|darwin).*\.zip/.test(fileName)) return 'darwin'
-  if (/\.AppImage$/.test(fileName)) return 'appimage'
   if (/\.exe$/.test(fileName)) return 'win32'
   return false
 }

test/index.js

@@ -76,13 +76,6 @@ test('Updates', async t => {
       t.match(body.url, /-darwin\.zip$/)
     })
 
-    await t.test('AppImage', async t => {
-      let res = await fetch(`${address}/zeit/hyper/appimage/0.0.0`)
-      t.equal(res.status, 200)
-      let body = await res.json()
-      t.match(body.url, /\.AppImage$/)
-    })
-
     await t.test('Win32', async t => {
       let res = await fetch(`${address}/zeit/hyper/win32/0.0.0`)
       t.equal(res.status, 200)