Cleaned up old analytics setup in Portal

refs https://github.com/TryGhost/Team/issues/2216

- the analytics tag was an old alpha concept and has been moved away from since so its safe to remove
- the flag that enabled this feature no longer exists so its completely inaccessible

ghost/portal/src/analytics.js

@@ -1,21 +0,0 @@
-import setupGhostApi from './utils/api';
-
-function sendEntryViewEvent({analyticsId, api}) {
-    if (analyticsId) {
-        api.analytics.pushEvent({
-            type: 'entry_view',
-            entry_id: analyticsId,
-            entry_url: window.location.href,
-            created_at: new Date()
-        });
-    }
-}
-
-function setupAnalytics({siteUrl, analyticsId}) {
-    const GhostApi = setupGhostApi({siteUrl});
-    // Fire page/post view event
-    sendEntryViewEvent({analyticsId, api: GhostApi});
-    return {};
-}
-
-export default setupAnalytics;

ghost/portal/src/index.js

@@ -2,7 +2,6 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import './index.css';
 import App from './App';
-import setupAnalytics from './analytics';
 
 const ROOT_DIV_ID = 'ghost-portal-root';
 
@@ -34,18 +33,9 @@ function handleTokenUrl() {
     }
 }
 
-function setupAnalyticsScript({siteUrl}) {
-    const analyticsTag = document.querySelector('meta[name=ghost-analytics-id]');
-    const analyticsId = analyticsTag?.content;
-    if (siteUrl && analyticsTag) {
-        setupAnalytics({siteUrl, analyticsId});
-    }
-}
-
 function setup({siteUrl}) {
     addRootDiv();
     handleTokenUrl();
-    setupAnalyticsScript({siteUrl});
 }
 
 function init() {

ghost/portal/src/utils/api.js

@@ -28,30 +28,6 @@ function setupGhostApi({siteUrl = window.location.origin, apiUrl, apiKey}) {
     }
     const api = {};
 
-    api.analytics = {
-        async pushEvent(event) {
-            const url = endpointFor({type: 'members', resource: 'events'});
-            const identity = await api.member.identity();
-            event.identity = identity;
-            const body = {
-                events: [event]
-            };
-            return makeRequest({
-                url,
-                method: 'POST',
-                headers: {
-                    'Content-Type': 'application/json'
-                },
-                body: JSON.stringify(body)
-            }).then(function (res) {
-                if (!res.ok) {
-                    return null;
-                }
-                return res.text();
-            });
-        }
-    };
-
     api.site = {
         read() {
             const url = endpointFor({type: 'members', resource: 'site'});