feature: create-react-app is abandoned. Remove its example to avoid confussion

[elboletaire]

Describe the feature

We're still maintaining a create-react-app when it is abandoned since a year ago. Having that example here may lead to confusion, and give us more troubles than anything.

Motivation

Users asked in support about issues with create-react-app that are expected, since it's abandoned. See facebook/create-react-app#13140

Proposal

Remove cra example (we have the vite one which is a copy from cra, and just works better).

Components affected

Examples

[marcvelmer]

Done. Now Vite is deployed.