Remove custom read/writer routing

app/controllers/application_controller.rb

@@ -1,10 +1,10 @@
 class ApplicationController < ActionController::Base
-  include LoadBalancerRouting, WriterAffinity
   include Authentication
   include Authorization
   include CurrentRequest, CurrentTimezone, SetPlatform
   include TurboFlash, ViewTransitions
   include Saas
+  include WriterAffinity
 
   stale_when_importmap_changes
   allow_browser versions: :modern

app/controllers/concerns/load_balancer_routing.rb

@@ -1,39 +0,0 @@
-module LoadBalancerRouting
-  extend ActiveSupport::Concern
-
-  ALLOWED_PRAGMAS = %w[ beamer_primary beamer_last_txn ]
-
-  included do
-    before_action :set_target_header, :set_writer_header
-    after_action :set_transaction_cookie
-  end
-
-  private
-    def set_target_header
-      response.headers["X-Kamal-Target"] = request.headers["X-Kamal-Target"]
-    end
-
-    def set_writer_header
-      if ApplicationRecord.current_tenant.present?
-        response.headers["X-Writer"] = pragma("beamer_primary")
-      end
-    end
-
-    def set_transaction_cookie
-      unless safe_request?
-        if ApplicationRecord.current_tenant.present? && Account.sole.present?
-          cookies[:last_transaction] = { value: pragma("beamer_last_txn"), path: Account.sole.slug }
-        end
-      end
-    end
-
-    def pragma(name)
-      if ALLOWED_PRAGMAS.include?(name)
-        ApplicationRecord.connection.execute("pragma #{name}").first&.values&.first
-      end
-    end
-
-    def safe_request?
-      request.get? || request.head?
-    end
-end