remove deploy UI mentions

Author: fjakobs

src/deploying/deploying_to_heroku.md

@@ -178,10 +178,6 @@
           ul
             // li.nav-submenu-item
             //   a(href='deploying_code.html') Deploying Your Code
-            // li.nav-submenu-item
-            //   a(href='deploying_to_heroku.html') Deploying to Heroku
-            // li.nav-submenu-item
-            //   a(href='deploying_to_windows_azure_sites.html') Deploying to Windows Azure Sites
             li.nav-submenu-item
               a(href='deploying_via_cli.html') Deploying via the Command Line
         li.nav-section