improve perf by keeping node-pty in the renderer process

app/bufferizedPTY.js

@@ -1,50 +0,0 @@
-module.exports = function patchPTYModule (path) {
-  const mod = require(path)
-  const oldSpawn = mod.spawn
-  if (mod.patched) {
-    return mod
-  }
-  mod.patched = true
-  mod.spawn = (file, args, opt) => {
-    let terminal = oldSpawn(file, args, opt)
-    let timeout = null
-    let buffer = ''
-    let lastFlush = 0
-    let nextTimeout = 0
-
-    const maxWindow = 250
-    const minWindow = 50
-
-    function flush () {
-        if (buffer) {
-            terminal.emit('data-buffered', buffer)
-        }
-        lastFlush = Date.now()
-        buffer = ''
-    }
-
-    function reschedule () {
-        if (timeout) {
-            clearTimeout(timeout)
-        }
-        nextTimeout = Date.now() + minWindow
-        timeout = setTimeout(() => {
-            timeout = null
-            flush()
-        }, minWindow)
-    }
-
-    terminal.on('data', data => {
-        buffer += data
-        if (Date.now() - lastFlush > maxWindow) {
-            flush()
-        } else {
-            if (Date.now() > nextTimeout - (minWindow / 10)) {
-                reschedule()
-            }
-        }
-    })
-    return terminal
-  }
-  return mod
-}