delete redundant folder

2019/2019-12-12_test/slides/index.md

-## Presentation Title
-<br><br>
-#### Month XYth, 2019
-
-<div style="top: 6em; left: 0%; position: absolute;">
-    <img src="theme/img/lcsb_bg.png">
-</div>
-
-<div style="top: 5em; left: 60%; position: absolute;">
-    <img src="slides/img/r3-training-logo.png" height="200px">
-    <br><br><br><br>
-    <h3>A catchy title</h3>
-    <br><br><br><br>
-    <h4>
-        Firstname LastName, Title<br><br>
-        firstname.lastname@uni.lu<br><br>
-        <i>Luxembourg Centre for Systems Biomedicine</i>
-    </h4>
-</div>
\ No newline at end of file

2019/2019-12-12_test/slides/list.json

-[
-    {
-        "filename": "index.md",
-        "attr": {
-        }
-    },
-    {
-        "filename": "overview.md",
-        "attr": {
-        }
-    },
-    {
-        "filename": "thanks.md",
-        "attr": {
-
-        }
-    }
-]

2019/2019-12-12_test/slides/overview.md

-## Overview
-
-0. Subject 1
-1. Subject 2
\ No newline at end of file

2019/2019-12-12_test/slides/thanks.md

-## Thank you.
-
-<center><img src="slides/img/r3-training-logo.png" height="200px"></center>
-
-Contact us if you need help:
-
-<a href="mailto:r3lab.core@uni.lu">r3lab.core@uni.lu</a>
-