remove references to pkg.julialang.org which is no longer maintained

_config.yml

@@ -12,8 +12,6 @@ navigation:
     title: downloads
   - url: "http://docs.julialang.org/"
     title: docs
-  - url: "http://pkg.julialang.org/"
-    title: packages
   - url: "/blog/"
     title: blog
   - url: "/community/"

_includes/footermenu.html

@@ -29,9 +29,6 @@ <h6>Packages</h6>
             <li class="nav-item">
               <a class="nav-link" href="https://juliaobserver.com">Julia Observer</a>
             </li>
-            <li class="nav-item">
-              <a class="nav-link" href="https://pkg.julialang.org/pulse.html">Ecosystem Pulse</a>
-            </li>
           </ul>
         </div>
         <div class="col-lg-2 col-md-3 col-sm-4 footer-menu-item">

teaching/index.md

@@ -207,12 +207,6 @@ The Julia and [IPython](http://ipython.org) teams have collaborated to
 develop [IJulia](https://github.com/JuliaLang/IJulia.jl), which
 provides a powerful graphical notebook interface to Julia.
 
-## Packages
-
-The Julia community has put together a number of
-[packages](http://pkg.julialang.org/)
-spanning multiple disciplines.
-
 ## The Julia manual
 
 The [Julia manual](http://docs.julialang.org/) contains a