Remove outdated services:doc rake task

Resolves https://gitlab.com/gitlab-org/gitlab-ee/issues/30908

doc/development/rake_tasks.md

@@ -143,12 +143,6 @@ This will compile and minify all JavaScript and CSS assets and copy them along
 with all other frontend assets (images, fonts, etc) into `/public/assets` where
 they can be easily inspected.
 
-## Generate API documentation for project services (e.g. Slack)
-
-```
-bundle exec rake services:doc
-```
-
 ## Updating Emoji Aliases
 
 To update the Emoji aliases file (used for Emoji autocomplete) you must run the

lib/tasks/services.rake

-services_template = <<-ERB
-# Services
-
-<% services.each do |service| %>
-## <%= service[:title] %>
-
-
-<% unless service[:description].blank? %>
-<%= service[:description] %>
-<% end %>
-
-
-### Create/Edit <%= service[:title] %> service
-
-Set <%= service[:title] %> service for a project.
-<% unless service[:help].blank? %>
-
-> <%= service[:help].gsub("\n", ' ') %>
-
-<% end %>
-
-```
-PUT /projects/:id/services/<%= service[:dashed_name] %>
-
-```
-
-Parameters:
-
-<% service[:params].each do |param| %>
-- `<%= param[:name] %>` <%= param[:required] ? "(**required**)" : "(optional)"  %><%= [" -",  param[:description]].join(" ").gsub("\n", '') unless param[:description].blank? %>
-
-<% end %>
-
-### Delete <%= service[:title] %> service
-
-Delete <%= service[:title] %> service for a project.
-
-```
-DELETE /projects/:id/services/<%= service[:dashed_name] %>
-
-```
-
-### Get <%= service[:title] %> service settings
-
-Get <%= service[:title] %> service settings for a project.
-
-```
-GET /projects/:id/services/<%= service[:dashed_name] %>
-
-```
-
-<% end %>
-ERB
-
-namespace :services do
-  task doc: :environment do
-    services = Service.available_services_names.map do |s|
-      service_start = Time.now
-      klass = "#{s}_service".classify.constantize
-
-      service = klass.new
-
-      service_hash = {}
-
-      service_hash[:title] = service.title
-      service_hash[:dashed_name] = s.dasherize
-      service_hash[:description] = service.description
-      service_hash[:help] = service.help
-      service_hash[:params] = service.fields.map do |p|
-        param_hash = {}
-
-        param_hash[:name] = p[:name]
-        param_hash[:description] = p[:placeholder] || p[:title]
-        param_hash[:required] = klass.validators_on(p[:name].to_sym).any? do |v|
-          v.class == ActiveRecord::Validations::PresenceValidator
-        end
-
-        param_hash
-      end
-      service_hash[:params].sort_by! { |p| p[:required] ? 0 : 1 }
-
-      puts "Collected data for: #{service.title}, #{Time.now - service_start}"
-      service_hash
-    end
-
-    doc_start = Time.now
-    doc_path = File.join(Rails.root, 'doc', 'api', 'services.md')
-
-    result = ERB.new(services_template, trim_mode: '>')
-      .result(OpenStruct.new(services: services).instance_eval { binding })
-
-    File.open(doc_path, 'w') do |f|
-      f.write result
-    end
-
-    puts "write a new service.md to: #{doc_path}, #{Time.now - doc_start}"
-  end
-end