🔥(frontend) remove Beta from logo

Docs got homologated, so we can remove the beta
logo from the DSFR theme.

src/frontend/apps/impress/cunningham.ts

@@ -58,7 +58,6 @@ tokens.themes.default.components = {
   ...{
     'la-gaufre': false,
     'home-proconnect': false,
-    beta: false,
     'image-system-filter': '',
     favicon: {
       ico: '/assets/favicon-light.ico',
@@ -84,7 +83,6 @@ const dsfrTheme = {
     components: {
       'la-gaufre': true,
       'home-proconnect': true,
-      beta: true,
       favicon: {
         ico: '/assets/favicon-dsfr.ico',
         'png-light': '/assets/favicon-dsfr.png',