Remove unused margin when post-body-content is empty

[myousefi08]

I created a custom post type that does not support any fields (support argument in $args)
It's just a metabox inside
But on the page to add that post (add-new post in wp-admin), there is an unused margin in , which creates a space at the top of the page that is related to the tag with the post-body-content ID.
I suggest deleting this margin if this tag is empty.
thank you