[MM-59060] Remove pre release features section from advanced section of user settings (#27608)

e2e-tests/cypress/tests/integration/channels/accessibility/accessibility_account_settings_spec.js

@@ -60,10 +60,6 @@ describe('Verify Accessibility Support in different sections in Settings and Pro
             {key: 'advancedCtrlSend', label: `Send Messages on ${isMac() ? '⌘+ENTER' : 'CTRL+ENTER'}`, type: 'radio'},
             {key: 'formatting', label: 'Enable Post Formatting', type: 'radio'},
             {key: 'joinLeave', label: 'Enable Join/Leave Messages', type: 'radio'},
-
-            // As only setting in advancedPreviewFeatures was related to editor preview this isn't required at the moment,
-            // may later on we can add it if we add more settings inside it
-            // {key: 'advancedPreviewFeatures', label: 'Preview Pre-release Features', type: 'checkbox'},
         ],
     };
     let url;

e2e-tests/cypress/tests/integration/channels/messaging/markdown_preview_inline_image_spec.js

@@ -14,7 +14,6 @@ describe('Messaging', () => {
     before(() => {
         // # Login as test user and visit off-topic
         cy.apiInitSetup({loginAfter: true}).then(({offTopicUrl}) => {
-            cy.apiSaveShowMarkdownPreviewPreference();
             cy.visit(offTopicUrl);
             cy.postMessage('hello');
         });

e2e-tests/cypress/tests/integration/channels/messaging/message_spec.js

@@ -143,8 +143,6 @@ describe('Message', () => {
     });
 
     it('MM-T3307 Focus remains in the RHS text box', () => {
-        cy.apiSaveShowMarkdownPreviewPreference();
-
         cy.postMessage(MESSAGES.MEDIUM);
 
         // # Open reply thread (RHS)