If you want to removing the Author, Date, Tags, and Comments on Salient theme Blog Titles add the following into your custom css box or to your Salient child theme style.css

For the Blog page;
body .meta-author {display: none !important;}
body .meta-category {display: none !important;}
body .meta-comment-count {display: none !important;}

For the Blog Single Pages;
body #single-below-header {display: none !important;}

To hide the date and love on masonry blog;
body #post-area.masonry article.post .post-meta {display: none!important;}
article.post .content-inner {border-bottom: none;}