Remove obsolete resource method in controllers

This method was used by controllers using the `Translatable` concern. We
forgot to remove it in commit 71601bd3f.

app/controllers/admin/admin_notifications_controller.rb

@@ -69,8 +69,4 @@ class Admin::AdminNotificationsController < Admin::BaseController
     def allowed_params
       [:link, :segment_recipient, translation_params(AdminNotification)]
     end
-
-    def resource
-      AdminNotification.find(params[:id])
-    end
 end

app/controllers/admin/banners_controller.rb

@@ -44,8 +44,4 @@ class Admin::BannersController < Admin::BaseController
        translation_params(Banner),
        web_section_ids: []]
     end
-
-    def resource
-      @banner ||= Banner.find(params[:id])
-    end
 end

app/controllers/admin/legislation/draft_versions_controller.rb

@@ -45,8 +45,4 @@ class Admin::Legislation::DraftVersionsController < Admin::Legislation::BaseCont
     def allowed_params
       [:status, :final_version, translation_params(Legislation::DraftVersion)]
     end
-
-    def resource
-      @draft_version
-    end
 end

app/controllers/admin/legislation/homepages_controller.rb

@@ -26,8 +26,4 @@ class Admin::Legislation::HomepagesController < Admin::Legislation::BaseControll
     def allowed_params
       [:homepage, :homepage_enabled, translation_params(::Legislation::Process)]
     end
-
-    def resource
-      @process || ::Legislation::Process.find(params[:id])
-    end
 end

app/controllers/admin/legislation/processes_controller.rb

@@ -77,8 +77,4 @@ class Admin::Legislation::ProcessesController < Admin::Legislation::BaseControll
         image_attributes: image_attributes
       ]
     end
-
-    def resource
-      @process || ::Legislation::Process.find(params[:id])
-    end
 end

app/controllers/admin/legislation/questions_controller.rb

@@ -55,8 +55,4 @@ class Admin::Legislation::QuestionsController < Admin::Legislation::BaseControll
                                       translation_params(::Legislation::QuestionOption)]
       ]
     end
-
-    def resource
-      @question || ::Legislation::Question.find(params[:id])
-    end
 end

app/controllers/admin/site_customization/information_texts_controller.rb

@@ -15,10 +15,6 @@ class Admin::SiteCustomization::InformationTextsController < Admin::SiteCustomiz
 
   private
 
-    def resource
-      I18nContent.find(content_params[:id])
-    end
-
     def content_params
       params.require(:contents).values
     end

app/controllers/admin/site_customization/pages_controller.rb

@@ -43,8 +43,4 @@ class Admin::SiteCustomization::PagesController < Admin::SiteCustomization::Base
 
       [*attributes, translation_params(SiteCustomization::Page)]
     end
-
-    def resource
-      SiteCustomization::Page.find(params[:id])
-    end
 end