[roll] Roll fuchsia [f2fs] Clean up unused code paths for deprecated heap allocation

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1427375
Original-Revision: 55340aafb45db7af1bc4f4d982c577cdae987d16
GitOrigin-RevId: 59f172005839b093556548399556d7d2a29c1672
Change-Id: I2917b37f2eb70162d82f7e2dd3c82242a2a5dc0d
diff --git a/stem b/stem
index cd1c70d..740f600 100644
--- a/stem
+++ b/stem
@@ -7,7 +7,7 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="6cb66ecd32778232eed25b0a876de03221f34006"/>
+            revision="55340aafb45db7af1bc4f4d982c577cdae987d16"/>
   </imports>
   <projects>
     <project name="cobalt"