deprecate support for external video playback proxy

src/invidious/routes/api/manifest.cr

@@ -222,19 +222,13 @@ module Invidious::Routes::API::Manifest
 
         raw_params["host"] = uri.host.not_nil!
 
-        proxy = Invidious::HttpServer::Utils.get_external_proxy
-
         if CONFIG.https_only
           scheme = "https://"
         else
           scheme = "http://"
         end
 
-        if !proxy.empty?
-          "#{proxy}/videoplayback?#{raw_params}"
-        else
-          "#{scheme}#{env.request.headers["Host"]}/videoplayback?#{raw_params}"
-        end
+        "#{scheme}#{env.request.headers["Host"]}/videoplayback?#{raw_params}"
       end
     end
 

src/invidious/routes/before_all.cr

@@ -54,13 +54,6 @@ module Invidious::Routes::BeforeAll
       extra_media_csp, extra_connect_csp = BackendInfo.get_csp(env.get("current_companion").as(Int32))
     end
 
-    if !CONFIG.external_videoplayback_proxy.empty?
-      CONFIG.external_videoplayback_proxy.each do |proxy|
-        extra_media_csp += " #{proxy}"
-        extra_connect_csp += " #{proxy}"
-      end
-    end
-
     # Allow media resources to be loaded from google servers
     # TODO: check if *.youtube.com can be removed
     if CONFIG.disabled?("local") || !preferences.local

src/invidious/routes/video_playback.cr

@@ -313,16 +313,7 @@ module Invidious::Routes::VideoPlayback
     end
 
     if local
-      external_proxy = Invidious::HttpServer::Utils.get_external_proxy
-      if !external_proxy.empty?
-        url = URI.parse(url)
-        external_proxy = URI.parse(external_proxy)
-        url.host = external_proxy.host
-        url.port = external_proxy.port
-        url = url.to_s
-      else
-        url = URI.parse(url).request_target.not_nil!
-      end
+      url = URI.parse(url).request_target.not_nil!
       url += "&title=#{URI.encode_www_form(title, space_to_plus: false)}" if title
     end