[Content folks: Merge when ready] Remove atom from sidebar (#31286)

Co-authored-by: Sam Browning <106113886+sabrowning1@users.noreply.github.com>
Co-authored-by: Robert Sese <734194+rsese@users.noreply.github.com>

content/index.md

@@ -134,11 +134,6 @@ childGroups:
       - education
       - support
 externalProducts:
-  atom:
-    id: atom
-    name: Atom
-    href: 'https://atom.io/docs'
-    external: true
   electron:
     id: electron
     name: Electron

lib/frontmatter.js

@@ -199,16 +199,6 @@ export const schema = {
     externalProducts: {
       type: 'object',
       properties: {
-        atom: {
-          type: 'object',
-          required: true,
-          properties: {
-            id: { type: 'string', required: true },
-            name: { type: 'string', required: true },
-            href: { type: 'string', format: 'url', required: true },
-            external: { type: 'boolean', required: true },
-          },
-        },
         electron: {
           type: 'object',
           required: true,

tests/rendering/sidebar.js

@@ -41,8 +41,7 @@ describe('sidebar', () => {
     ).toBe('Get started')
   })
 
-  test('includes links to external products like the Atom, Electron, and CodeQL', async () => {
-    expect($homePage('[data-testid=sidebar] a[href="https://atom.io/docs"]')).toHaveLength(1)
+  test('includes links to external products like Electron and CodeQL', async () => {
     expect(
       $homePage('[data-testid=sidebar] a[href="https://electronjs.org/docs/latest"]')
     ).toHaveLength(1)