refactor(cursor-models): remove tier property from Cursor model configurations

- Removed the 'tier' property from Cursor model configurations and related UI components.
- Updated relevant files to reflect the removal of tier-related logic and display elements.
- This change simplifies the model structure and UI, focusing on essential attributes.

apps/ui/src/components/views/settings-view/providers/cursor-model-configuration.tsx

@@ -117,9 +117,6 @@ export function CursorModelConfiguration({
                       <p className="text-xs text-muted-foreground">{model.description}</p>
                     </div>
                   </div>
-                  <Badge variant={model.tier === 'free' ? 'default' : 'secondary'}>
-                    {model.tier}
-                  </Badge>
                 </div>
               );
             })}