Support delete user email in admin panel (#31690)

![QQ_1721784609320](https://github.com/user-attachments/assets/23f08bf3-93f4-44d7-963d-10380ef8c1f1)

![QQ_1721784616403](https://github.com/user-attachments/assets/667cbd1e-5e21-4489-8d18-2a7be85190db)

![QQ_1721784626722](https://github.com/user-attachments/assets/495beb94-dfa2-481c-aa60-d5115cad1ae1)

---------

Co-authored-by: Jason Song <i@wolfogre.com>

routers/web/web.go

@@ -725,6 +725,7 @@ func registerRoutes(m *web.Router) {
 		m.Group("/emails", func() {
 			m.Get("", admin.Emails)
 			m.Post("/activate", admin.ActivateEmail)
+			m.Post("/delete", admin.DeleteEmail)
 		})
 
 		m.Group("/orgs", func() {