Revert "adding custom landing page for heroku"

This reverts commit 2c9d8460.

app/views/home/_show.html.haml

-#landing_content
-  .span-22.prepend-1.append-1.last
-    #diaspora_description.section
-      %p
-        = t('.share_what_you_want')
-
-  #why.span-24.last
-    .span-6.append-3
-      .info_pane
-        %h2
-          = t('.choice')
-        %p
-          = t('.choice_explanation')
-        
-    .span-6.append-3
-      .info_pane
-        %h2
-          = t('.ownership')
-        %p
-          = t('.ownership_explanation')
-    .span-6.last
-      .info_pane
-        %h2
-          = t('.simplicity')
-        %p
-          = t('.simplicity_explanation')
-
-
-  #signup.span-24.last
-    #signup_field.section
-      = render 'shared/mail_signup_form'
-
-    #login_field.section
-      = t('.already_account')
-      = link_to t('.login_here'), new_user_session_path
-
-  #info_links.prepend-1.span-22.append-1.last
-    %h3
-      = link_to t('.learn_about_host'), 'http://bit.ly/dZqyd3'
-      
-
-  .span-24.last{:style=>"text-align:center;"}
-    %ul#press_logos
-      %li= link_to image_tag("press_logos/the_new_york_times_logo.png"), "http://www.nytimes.com/2010/05/12/nyregion/12about.html", :title => "The New York Times"
-      %li= link_to image_tag("press_logos/nymag_logo.png"), "http://nymag.com/news/features/establishments/68512/", :title => "New York Magazine"
-      %li= link_to image_tag("press_logos/mashable_logo.png"), "http://mashable.com/2010/08/26/facebook-alternative-diaspora-launches-september-15/", :title => "Mashable"
-      %li= link_to image_tag("press_logos/techcrunch_logo.png"), "http://techcrunch.com/2010/09/15/diaspora-revealed/", :title => "TechCrunch"
-