[pallet-revive] Remove js examples

[pgherveou]

Remove JS examples, they now belongs to the evm-test-suite repo

[pgherveou]

/cmd prdoc --audience runtime_dev --bump minor

[athei]

Can you move the examples outside of the rust directory now to follow cargo conventions? Then we also don't need to explicitly mention them in the manifest anymore.

[paritytech-workflow-stopper]

All GitHub workflows were cancelled due to failure one of the required jobs.
Failed workflow url: https://github.com/paritytech/polkadot-sdk/actions/runs/13456559509
Failed job name: cargo-clippy