How to remove date from posts.

In order to remove date from blog posts and posts block, Please enter below css in wp-admin/appearance/customise/additionalCSS box.

On blog page.

To remove full block that displays date/author/categories.

.blog_area .blog_inner .blog_lift_sidebar .blog_items .breadcrumb_date {
display: none;
}

To remove only date

.blog_area .blog_inner .blog_lift_sidebar .blog_items .breadcrumb_date h6 {
display: none;
}

On single post page.
If you want to remove full block showing date and author info.

.breadcrumb_date h6{ display: none;}

If you want to remove only date.

.breadcrumb_date h6{ display: none;}

Remove date from other areas.

.recent_inner h6,
.line_news h4{ display: none;}