docs(batch-settlement): remove link to non-existent streaming server example

[abhicris]

The batch-settlement EVM README links to examples/typescript/servers/batch-settlement-streaming, but that directory was never merged into main (returns 404 on github.com). Remove the dead bullet so the Examples section only points to directories that actually exist.

Why

New users following the batch-settlement docs hit a 404 and assume the SDK is broken or abandoned. The other three example bullets all resolve; only the streaming bullet is dead.

[vercel]

@abhicris is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[phdargen]

Thanks @abhicris, note that we require commit signing, please rebase and verify your commits.
See here for instructions: https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification