Drop the engines RSS feed

The engines listing is a handful of curated pages, not a stream — no feed
needed. Removes the route, controller action, RssService#engines_feed and
the footer link. The WikiService#pages alias stays (blog/howtos feeds use
it).

apps/api/app/controllers/api/rss_controller.rb

@@ -24,11 +24,4 @@ class Api::RssController < ApiController
     xml = RssService.new.howtos_feed
     render xml: xml, content_type: "application/rss+xml"
   end
-
-  api :GET, "/api/rss/engines", "Engines RSS feed"
-  returns code: 200, desc: "RSS XML feed of in-house engines"
-  def engines
-    xml = RssService.new.engines_feed
-    render xml: xml, content_type: "application/rss+xml"
-  end
 end

apps/api/app/services/rss_service.rb

@@ -50,27 +50,6 @@ class RssService
     end.to_s
   end
 
-  def engines_feed
-    pages = WikiService.new.pages(tag: "engine", limit: 30)
-    items = pages.fetch("pages", [])
-
-    RSS::Maker.make("2.0") do |maker|
-      maker.channel.title       = "Teletype Games Engines"
-      maker.channel.link        = "#{SITE_URL}/engines"
-      maker.channel.description = "In-house engines and frameworks from Teletype Games"
-      maker.channel.language    = "hu"
-
-      items.each do |page|
-        maker.items.new_item do |item|
-          item.title       = page["title"]
-          item.link        = page["repo"].presence || "#{WIKI_URL}/#{page["path"]}"
-          item.description = page["description"].to_s
-          item.pubDate     = Time.parse(page["createdAt"]) rescue Time.current
-        end
-      end
-    end.to_s
-  end
-
   def howtos_feed
     pages = WikiService.new.pages(tag: "howto", limit: 30)
     items = pages.fetch("pages", [])