Remove post navigation

You can use the following code to remove the post navigation on single posts: 

.post-navigation {
	display: none;
}

You can use the following code to remove the posts navigation on your blog index: 

.posts-navigation {
	display: none;
}
INFO: This is a CSS snippet. If you don't have a child theme or don't know how to use one, we recommend that you add this snippet in Customize > Additional CSS.