You probably should not advise people to make changes directly to the theme’s files, unless you never intend on releasing any updates to the theme. Once someone updates the theme on their site, all of their changes will be lost, and you’ll end up with a very ticked off user. The recommended procedure for users to make any such changes is to have them create a child theme and make the changes to a copy of the particular file (e.g., content.php).
@europaiptv, did you try this CSS to hide the meta data:
.blog-post-meta {
display: none;
}
CSS solutions are a bit safer than code solutions, but again, you want to either use a child theme or a CSS plugin instead of changing the theme’s stylesheet directly.