Coding, place this in your style.css, preferably in a child-theme or custom css.
.post_meta ul li {
display: none;
}
The best way to make changes like this to a theme is to use a child theme, so your tweaks won’t be overwritten when updating the theme. Here are some guides in case you haven’t made one before:
https://codex.wordpress.org/Child_Themes
http://op111.net/53/
http://vimeo.com/39023468
You should also check this out for customizing your site.
http://themesandco.com/snippet/firebug-best-spent-6-minutes/
http://getfirebug.com
Then to edit this editor is fantastic. You can edit multiple files at the same time.
http://notepad-plus-plus.org/
And this FTP program is tops in my book.
http://www.coreftp.com/
If you are not a technical person, then i would suggest you the use of the plugins.You can search in google, like wp post date removal.
thanks
