Update maintainers in README.md (#3663)

Co-authored-by: Randy <randytolentino@ibm.com>

README.md

@@ -148,7 +148,6 @@ We actively maintain our backlog using [GitHub Projects](https://docs.github.com
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 <td align="center"><a href="https://github.com/eddybrando"><img src="https://avatars2.githubusercontent.com/u/22047320?s=460&u=58f460132271f2ea45d270841f3821eb46c4bb5e&v=4" width="120px;" alt="Eddybrando Vásquez"/><br /><sub><b>Eddybrando Vásquez</b></sub></a><br /><a href="https://github.com/qiskit/qiskit.org/issues?q=author%3Aeddybrando" title="Bug reports">🐛</a><a href="https://github.com/qiskit/qiskit.org/commits?author=eddybrando" title="Code">💻</a><a href="https://join.slack.com/t/qiskit/shared_invite/enQtODQ2NTIyOTgwMTQ3LTI0NzM2NzkzZjJhNDgzZjY5MTQzNDY3MGNiZGQzNTNkZTE4Nzg1MjMwMmFjY2UwZTgyNDlmYWQwYmZjMjE1ZTM" title="Answering Questions on Slack">💬</a></td>
 <td align="center"><a href="https://github.com/techtolentino"><img src="https://avatars2.githubusercontent.com/u/6276074?s=460&v=4" width="120px;" alt="Randy Tolentino"/><br /><sub><b>Randy Tolentino</b></sub></a><br /><a href="https://github.com/qiskit/qiskit.org/issues?q=author%3Atechtolentino" title="Bug reports">🐛</a><a href="https://github.com/qiskit/qiskit.org/commits?author=techtolentino" title="Code">💻</a><a href="https://join.slack.com/t/qiskit/shared_invite/enQtODQ2NTIyOTgwMTQ3LTI0NzM2NzkzZjJhNDgzZjY5MTQzNDY3MGNiZGQzNTNkZTE4Nzg1MjMwMmFjY2UwZTgyNDlmYWQwYmZjMjE1ZTM" title="Answering Questions on Slack">💬</a></td>
-<td align="center"><a href="https://github.com/y4izus"><img src="https://avatars2.githubusercontent.com/u/17231966?s=460&v=4" width="120px;" alt="Yaiza García"/><br /><sub><b>Yaiza García</b></sub></a><br /><a href="https://github.com/qiskit/qiskit.org/issues?q=author%3Ay4izus" title="Bug reports">🐛</a><a href="https://github.com/qiskit/qiskit.org/commits?author=y4izus" title="Code">💻</a><a href="https://join.slack.com/t/qiskit/shared_invite/enQtODQ2NTIyOTgwMTQ3LTI0NzM2NzkzZjJhNDgzZjY5MTQzNDY3MGNiZGQzNTNkZTE4Nzg1MjMwMmFjY2UwZTgyNDlmYWQwYmZjMjE1ZTM" title="Answering Questions on Slack">💬</a></td>
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