remove remaining Global() calls (outside of tests) (#7521)

api/api.go

@@ -121,7 +121,7 @@ func Init(a *app.App, root *mux.Router) *API {
 
 	utils.InitHTML()
 
-	app.InitEmailBatching()
+	a.InitEmailBatching()
 
 	if *utils.Cfg.ServiceSettings.EnableAPIv3 {
 		l4g.Info("API version 3 is scheduled for deprecation. Please see https://api.mattermost.com for details.")