Revert "API should follow RequireSignInView (#8654) (#8661)" (#8674)

This reverts commit ffff835b73.

routers/api/v1/api.go

@@ -845,7 +845,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 		m.Group("/topics", func() {
 			m.Get("/search", repo.TopicSearch)
 		})
-	}, securityHeaders(), reqTokenBySetting(), context.APIContexter(), sudo())
+	}, securityHeaders(), context.APIContexter(), sudo())
 }
 
 func securityHeaders() macaron.Handler {
@@ -857,10 +857,3 @@ func securityHeaders() macaron.Handler {
 		})
 	}
 }
-
-func reqTokenBySetting() macaron.Handler {
-	if setting.Service.RequireSignInView {
-		return reqToken()
-	}
-	return func(ctx *macaron.Context) {}
-}