Merge pull request #4259 from ipfs/misc/update-preload

Update preload.go to be the same one as generated by preload.sh

plugin/loader/preload.go

@@ -4,4 +4,8 @@ import (
 	"github.com/ipfs/go-ipfs/plugin"
 )
 
+// DO NOT EDIT THIS FILE
+// This file is being generated as part of plugin build process
+// To change it, modify the plugin/loader/preload.sh
+
 var preloadPlugins = []plugin.Plugin{}