Revert "MM-27147 - /cloud api endpoints (#15428)" (#15615)

This reverts commit 88aed7ec9e.

model/cloud.go

@@ -1,32 +0,0 @@
-// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
-// See LICENSE.txt for license information.
-
-package model
-
-// Product model represents a product on the cloud system.
-type Product struct {
-	ID           string   `json:"id"`
-	Name         string   `json:"name"`
-	Description  string   `json:"description"`
-	PricePerSeat float64  `json:"price_per_seat"`
-	AddOns       []*AddOn `json:"add_ons"`
-}
-
-// AddOn represents an addon to a product.
-type AddOn struct {
-	ID           string  `json:"id"`
-	Name         string  `json:"name"`
-	DisplayName  string  `json:"display_name"`
-	PricePerSeat float64 `json:"price_per_seat"`
-}
-
-// StripeSetupIntent represents the SetupIntent model from Stripe for updating payment methods.
-type StripeSetupIntent struct {
-	ID           string `json:"id"`
-	ClientSecret string `json:"client_secret"`
-}
-
-// ConfirmPaymentMethodRequest contains the fields for the customer payment update API.
-type ConfirmPaymentMethodRequest struct {
-	StripeSetupIntentID string `json:"stripe_setup_intent_id"`
-}