Fix wrong init dependency on markup extensions (#7038)

* fix wrong init dependency on markup extensions

cmd/web.go

@@ -15,7 +15,6 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/modules/log"
-	"code.gitea.io/gitea/modules/markup/external"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/routers"
 	"code.gitea.io/gitea/routers/routes"
@@ -111,8 +110,6 @@ func runWeb(ctx *cli.Context) error {
 
 	routers.GlobalInit()
 
-	external.RegisterParsers()
-
 	m := routes.NewMacaron()
 	routes.RegisterRoutes(m)