diff --git a/plugins/commands/serve/mappers/provisioner.rb b/plugins/commands/serve/mappers/provisioner.rb
index 181491133..5447e2d69 100644
--- a/plugins/commands/serve/mappers/provisioner.rb
+++ b/plugins/commands/serve/mappers/provisioner.rb
@@ -15,35 +15,6 @@ module VagrantPlugins
           Client::Provisioner.load(proto, broker: broker)
         end
       end
-
-      class GeneralConfigFromSpec < Mapper
-        def initialize
-          inputs = [].tap do |i|
-            i << Input.new(type: SDK::FuncSpec::Value) { |arg|
-              arg.type == "hashicorp.vagrant.sdk.Vagrantfile.GeneralConfig" &&
-                !arg&.value&.value.nil?
-            }
-          end
-          super(inputs: inputs, output: SDK::Vagrantfile::GeneralConfig, func: method(:converter))
-        end
-
-        def converter(proto)
-          proto.value.unpack(SDK::Vagrantfile::GeneralConfig)
-        end
-      end
-
-      class ConfigToProto < Mapper
-        def initialize
-          inputs = [].tap do |i|
-            i << Input.new(type: Vagrant::Plugin::V2::Config)
-          end
-          super(inputs: inputs, output: SDK::Vagrantfile::GeneralConfig, func: method(:converter))
-        end
-
-        def converter(config)
-          config.to_proto(config.class.to_s)
-        end
-      end
     end
   end
 end