You could solve both this and the other issue (Unable to deselect Volume, number and years in issue data section) by creating a default child theme and modifying some templates.
Namely this: https://github.com/pkp/ojs/blob/master/templates/frontend/objects/issue_summary.tpl#L31
And this: https://github.com/pkp/ojs/blob/master/templates/frontend/objects/issue_toc.tpl#L69
There is still a bug in the getIssueIdentification function, but you could just remove that part from your custom theme template.