Revert of Enable overriding interface binders for any services running in current process.

services/service_manager/public/cpp/binder_registry.cc

Index: services/service_manager/public/cpp/binder_registry.cc
diff --git a/services/service_manager/public/cpp/binder_registry.cc b/services/service_manager/public/cpp/binder_registry.cc
index d50de16f8b7fadd62e5030b115fc5efc8ea39603..d45591626694b4833eda0bb15edea48c8a051b34 100644
--- a/services/service_manager/public/cpp/binder_registry.cc
+++ b/services/service_manager/public/cpp/binder_registry.cc
@@ -17,14 +17,6 @@
     const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
   SetInterfaceBinder(interface_name, base::MakeUnique<GenericCallbackBinder>(
                                          callback, task_runner));
-}
-
-void BinderRegistry::AddInterface(
-    const std::string& interface_name,
-    const Binder& binder_callback,
-    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
-  SetInterfaceBinder(interface_name, base::MakeUnique<GenericCallbackBinder>(
-                                         binder_callback, task_runner));
 }
 
 void BinderRegistry::RemoveInterface(const std::string& interface_name) {