IServiceManager: remove onRegistration todo

This would introduce a second way to retrieve a service. Since we
already handle situations where a service dies in-between 'get' and
the 'onRegistration' notification, it makes sense to continue doing
this and not introduce additional complexity into hwservicemanager.

Bug: 66921961
Test: N/A
Change-Id: Ifc29b1b4e0eb45079be85c41f8d0ce012eff60b2
diff --git a/transport/manager/1.2/IServiceManager.hal b/transport/manager/1.2/IServiceManager.hal
index ae3fdfd..b4c990a 100644
--- a/transport/manager/1.2/IServiceManager.hal
+++ b/transport/manager/1.2/IServiceManager.hal
@@ -22,7 +22,6 @@
 
 interface IServiceManager extends @1.1::IServiceManager {
     // TODO(b/66921961): additional functionality for the next release:
-    // - Better notifications (onRegistration will contain the interface)
     // - Method to list interfaces in the manifest (for b/76108617, since if they are
     //     lazy, they will no longer show up in listByInterface)