Remove empty section and obsolete graph.

templates/mathlib_stats.html

@@ -32,19 +32,6 @@ <h2>Temporal distribution</h2>
 
       <canvas id="by_year"></canvas>
 
-    <h2>Authors</h2>
-
-    <div>
-       <div id="authors_table"></div>
-    </div>
-
-    <canvas id="lines_by_authors" class="mt-5"></canvas>
-
-      <canvas id="commits_by_authors"></canvas>
-
-    <h2>Dependency graph</h2>
-
-    <p>A visualization showing how the various topics in mathlib interact and their relative sizes can be found <a href="https://eric-wieser.github.io/mathlib-import-graph">here</a>.</p>
 {% endblock %}
 
 {% block extrajs %}