remove unused v1 services api code (#4085)

Author: sethboyles

app/controllers/services/managed_service_instances_controller.rb

@@ -1,5 +1,3 @@
-require 'vcap/services/api'
-
 module VCAP::CloudController
   class ManagedServiceInstancesController < RestController::ModelController
     allow_unauthenticated_access

app/controllers/services/service_bindings_controller.rb

@@ -1,4 +1,3 @@
-require 'vcap/services/api'
 require 'controllers/services/lifecycle/service_instance_binding_manager'
 require 'models/helpers/process_types'
 require 'actions/v2/services/service_binding_read'

app/controllers/services/service_instances_controller.rb

@@ -1,4 +1,3 @@
-require 'vcap/services/api'
 require 'jobs/audit_event_job'
 require 'actions/services/service_instance_create'
 require 'actions/services/service_instance_update'

app/controllers/services/service_keys_controller.rb

@@ -1,5 +1,3 @@
-require 'vcap/services/api'
-
 module VCAP::CloudController
   class ServiceKeysController < RestController::ModelController
     define_attributes do

app/controllers/services/service_usage_events_controller.rb

@@ -1,5 +1,3 @@
-require 'vcap/services/api'
-
 module VCAP::CloudController
   class ServiceUsageEventsController < RestController::ModelController
     query_parameters :service_instance_type, :service_guid

app/models/services/managed_service_instance.rb

@@ -95,10 +95,6 @@ def gateway_data
       val
     end
 
-    def requester
-      VCAP::Services::Api::SynchronousHttpRequest
-    end
-
     delegate :service, to: :service_plan
 
     delegate :service_broker, to: :service_plan