remove vendor_service

Now that all users are cleaned up, this is unused.

Bug: 237115222
Test: build
Change-Id: I22a303194bb760a40dac0e306895c348c5ce7b7a
diff --git a/public/attributes b/public/attributes
index fb31b77..f34ac41 100644
--- a/public/attributes
+++ b/public/attributes
@@ -173,19 +173,6 @@
 # services which are explicitly disallowed for untrusted apps to access
 attribute protected_service;
 
-# TODO(b/237115222): remove from all vendor policy, unused
-#
-# We don't need this because interface type shouldn't be associated
-# with where they are served. We can serve HALs from anywhere if they are
-# implemented in software.
-#
-# Previously:
-# services which served by vendor and also using the copy of libbinder on
-# system (for instance via libbinder_ndk). services using a different copy
-# of libbinder currently need their own context manager (e.g.
-# vndservicemanager)
-attribute vendor_service;
-
 # All types used for services managed by servicemanager.
 # On change, update CHECK_SC_ASSERT_ATTRS
 # definition in tools/checkfc.c.