[roll] Roll fuchsia [build] Remove post-unification IOUs

Remove comments referencing build unification interim state (that is no
longer needed), TODOs that were done, or TODOs for things that we
decided not to do or determined that there is not yet consensus for
doing.

Original-Bug: 60410
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/637121
Original-Revision: 0a361adcf07bb4c583896606b64c0dd0b3096dc9
GitOrigin-RevId: 7b39fdee604f34c5660f5612a884468ba28bd56f
Change-Id: I666d7123ba08aef0d741e3608cdaa6df9fa4b273
diff --git a/stem b/stem
index 6d0196b..81954a1 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="d990bbf016d65e3a123d99a08dbb788049cae6af"/>
+             revision="0a361adcf07bb4c583896606b64c0dd0b3096dc9"/>
   </projects>
   <hooks>
     <hook name="install-environment"