[docs] drop reference to non-existing docs

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>

index.html

@@ -91,11 +91,7 @@ <h2>Authors</h2>
 <p><a href="mailto:fabbione@kronosnet.org">Fabio M. Di Nitto (fabbione at kronosnet.org)</a></p>
 <p><a href="mailto:fsimon@kronosnet.org">Federico Simoncelli (fsimon at kronosnet.org)</a></p>
 
-<h2>User Documentation</h2>
-<a href="https://kronosnet.org/docs/en-US/Documentation/0.1/html/Kronosnet/">html</a><br />
-<a href="https://kronosnet.org/docs/en-US/Documentation/0.1/html-single/Kronosnet/">html (single file)</a><br />
-<a href="https://kronosnet.org/docs/en-US/Documentation/0.1/pdf/Kronosnet/Documentation-0.1-Kronosnet-en-US.pdf">pdf</a><br />
-<a href="https://kronosnet.org/docs/en-US/Documentation/0.1/txt/Kronosnet/Kronosnet.txt">txt</a><br />
+<h2>User Documentation (TBD)</h2>
 <h2>Developer Documentation (TBD)</h2>
 <h2>IRC</h2>
 Join us on #kronosnet channel on Freenode<br />