[roll] Roll fuchsia [ffx] Remove ephemeral targets (retry)

We no longer use  "ephemeral" targets (they were added in fxr/667165
as a mechanism, now obsolete, for dealing with emulators).

(Previous version, fxr/1271607) failed to compile on macs due to a "use"
statement that was not required on macs. That has been fixed.)

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1272070
Original-Revision: 0c55bef09986b8443dcc133aa393dff5e361152e
GitOrigin-RevId: 58a95b3900136be442e550b2cbb9d19f09d248e5
Change-Id: I4ad1f4e2654b10b7fa9189c253223854d330e35f
diff --git a/stem b/stem
index 8555798..5b4bf11 100644
--- a/stem
+++ b/stem
@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="ad0a94f5b7395be689e0e2a0bf9881a667025285"
+             revision="0c55bef09986b8443dcc133aa393dff5e361152e"
              />
   </imports>
   <projects>