Update index.html

Author: mulle-nat

index.html

@@ -78,9 +78,7 @@ <h2>+[mulle-objc about]</h2>
         <tr><th>Class libraries</th><td><a href="https://github.com/MulleFoundation">MulleFoundation</a><br>
                                       <a href="https://github.com/MulleWeb">MulleWeb</a></td></tr>
         <tr><th>Runtime and Root classes</th><td><a href="https://github.com/mulle-objc/">mulle-objc</a></td></tr>
-        <tr><th>C libraries</th><td><a href="https://github.com/mulle-c">mulle-c</a><br>
-                                    <a href="https://github.com/mulle-concurrent">mulle-concurrent</a><br>
-                                    <a href="https://github.com/mulle-core">mulle-core</a></td></tr>
+        <tr><th>C libraries</th><td><a href="https://github.com/mulle-core">mulle-core</a></td></tr>
         <tr><td colspan=2></td></tr>
         <tr><th>Compiler / Debugger</th><td><a href="https://github.com/mulle-cc">mulle-cc</a></td></tr>
         <tr><th>Tools</th><td><a href="https://github.com/mulle-sde">mulle-sde</a></td></tr>