Remove old Cloud SQL region tags once docs have been updated

[jackwotherspoon]

As part of #8250 we are adding new region tags for consistency across languages.

Removal of old cloud_sql_XXX_sqlalchemy_sslcerts region tags from samples will be required once docs have been updated to use new region tag.

Affected files to be updated: https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/cloud-sql/postgres/sqlalchemy/connect_tcp.py https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/cloud-sql/mysql/sqlalchemy/connect_tcp.py https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/cloud-sql/sql-server/sqlalchemy/connect_tcp.py

[bugalwena]

Thanks, I will

[jackwotherspoon]

@bugalwena the tags cannot be removed yet. They can only be removed once the docs have been updated accordingly to use the new tags for code samples.