libbinder: remove handle 0 TODO

A different way to do this and needing to support both ways doesn't
seem to make this better.

Fixes: 168900528
Test: N/A
Change-Id: I0f067b6f18a2c47dbc13e00dd692d60bdaf3f639
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 9abe4b5..269b086 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -320,11 +320,6 @@
                 //
                 // Note that this is not race-free if the context manager
                 // dies while this code runs.
-                //
-                // TODO: add a driver API to wait for context manager, or
-                // stop special casing handle 0 for context manager and add
-                // a driver API to get a handle to the context manager with
-                // proper reference counting.
 
                 IPCThreadState* ipc = IPCThreadState::self();