How to remove overlay and link from posts in Oblique

In case you don't have a CSS plugin, we advise you install Advanced CSS Editor plugin and follow the instructions. In Appearance -> Customize -> Advanced CSS Editor add the following code.

If you're using WP 4.3+ then you could go to Appearance->Customize->Additional CSS and add the code below.

.entry-thumb:after{display: none;}
a.thumb-link{display: none}

That's it, save your changes and you're done!