Removes blog_version from Schema

[A-Matt]

Removes the Redudant Blog_version table from schema... this causes errors in the Upgrade screen as the wp-db no longer stores information for this table as it is now removed.

This can be Confirmed in the Normal Wordpress: https://github.com/WordPress/wordpress-develop/blob/6a5ff5aa03713469a97398d6c93b476d19719b08/src/wp-admin/includes/schema.php#L247-L264

Wordpress Ticket: https://core.trac.wordpress.org/ticket/19755 Wordpress PR: https://core.trac.wordpress.org/attachment/ticket/19755/19755.patch