Remove collaborative legislation summary

This feature wasn't properly tested nor reviewed, and after reviewing
several pull requests with a similar status and considering this pull
request is related to the public area of the web, we've decided to
remove it before releasing version 1.1.

This commit reverts commit 4f50e67a.

app/controllers/legislation/processes_controller.rb

@@ -7,7 +7,6 @@ class Legislation::ProcessesController < Legislation::BaseController
   load_and_authorize_resource
 
   before_action :set_random_seed, only: :proposals
-  before_action :check_past, only: :resume
 
   def index
     @current_filter ||= "open"
@@ -98,21 +97,6 @@ class Legislation::ProcessesController < Legislation::BaseController
     @phase = :milestones
   end
 
-  def resume
-    @phase = :resume
-    respond_to do |format|
-      format.html
-      format.xlsx { render xlsx: "resume_to_xlsx", filename: ("resume-" + Date.current.to_s + ".xlsx") }
-    end
-  end
-
-  def check_past
-    set_process
-    if !@process.past?
-      redirect_to legislation_process_path
-    end
-  end
-
   def proposals
     set_process
     @phase = :proposals_phase