Revert "DEV: Add context in `AdminConstraint` (#15838)" (#15845)

This reverts commit 492226a973.

config/routes.rb

@@ -32,8 +32,8 @@ Discourse::Application.routes.draw do
         mount Logster::Web => "/logs"
       else
         # only allow sidekiq in master site
-        mount Sidekiq::Web => "/sidekiq", constraints: AdminConstraint.new(require_master: true, context: "sidekiq")
-        mount Logster::Web => "/logs", constraints: AdminConstraint.new(context: "logster")
+        mount Sidekiq::Web => "/sidekiq", constraints: AdminConstraint.new(require_master: true)
+        mount Logster::Web => "/logs", constraints: AdminConstraint.new
       end
     end
 

lib/admin_constraint.rb

@@ -4,16 +4,12 @@ class AdminConstraint
 
   def initialize(options = {})
     @require_master = options[:require_master]
-    # @context isn't used here, but it exists to give plugins extra context
-    # about the destination of the request.
-    # possible values are: sidekiq, logster and app (default).
-    @context = options[:context] || "app"
   end
 
   def matches?(request)
     return false if @require_master && RailsMultisite::ConnectionManagement.current_db != "default"
-    @current_user = CurrentUser.lookup_from_env(request.env)
-    @current_user&.admin? && custom_admin_check(request)
+    current_user = CurrentUser.lookup_from_env(request.env)
+    current_user&.admin? && custom_admin_check(request)
   rescue Discourse::InvalidAccess, Discourse::ReadOnly
     false
   end