Move acepting of ToS change to a reflex

Spree::Admin::UserController is for super admin user only. Moving to a
reflex simplifies the code by getting rid of a new route and a new stimulus
controller

spec/javascripts/stimulus/terms_of_service_banner_controller_test.js

@@ -1,64 +0,0 @@
-/**
- * @jest-environment jsdom
- */
-
-import { Application } from "stimulus"
-import terms_of_service_banner_controller from "../../../app/webpacker/controllers/terms_of_service_banner_controller"
-
-describe("TermsOfServiceBannerController", () => {
-  beforeAll(() => {
-    const application = Application.start()
-    application.register("terms-of-service-banner", terms_of_service_banner_controller)
-  })
-
-  beforeEach(() => {
-    document.body.innerHTML = `
-      <meta content="abc123authenticitytoken" name="csrf-token">
-      <div 
-        id="test-controller-div" 
-        data-controller="terms-of-service-banner" 
-        data-terms-of-service-banner-url-value="admin/users/10/accept_terms_of_service"
-      >
-        <div>
-          <span>Terms of service has been updated </span> 
-          <button id="test-accept-banner" data-action="click->terms-of-service-banner#accept">
-            Accept terms of service
-          </button>
-          <button id="test-close-banner" data-action="click->terms-of-service-banner#close_banner">close</button>
-        </div>
-      </div>
-    `
-  })
-
-  describe("#close", () => {
-    it("removes the banner", () => {
-      const closeButton = document.getElementById("test-close-banner")
-      closeButton.click()
-      
-      expect(document.getElementById("test-controller-div")).toBeNull()
-    })
-  })
-
-  describe("#accept", () => {
-    it("fires a request to accept terms of service", () => {
-      const mockFetch = jest.fn().mockImplementation( (_url, _options) =>
-        Promise.resolve({
-          ok: true,
-          json: () => "",
-        })
-      )
-      window.fetch = (_url, _options) => {
-        return mockFetch(_url, _options)
-      }
-
-      const button = document.getElementById("test-accept-banner")
-
-      button.click()
-     
-      expect(mockFetch).toHaveBeenCalledWith(
-        "admin/users/10/accept_terms_of_service",
-        { headers: { "X-CSRF-Token": "abc123authenticitytoken" }, method: "post" }
-      )
-    })
-  })
-})