[embedder] Remove warning about infinite loading.

This no longer seems to happen, maybe due to an SDK upgrade
or workflow improvements to always use the right version
of ffx.

Change-Id: I39f5c4bd07dd955d3079ff090a9f363c182e8599
Reviewed-on: https://fuchsia-review.googlesource.com/c/flutter-embedder/+/735883
Reviewed-by: Ben Bergkamp <benbergkamp@google.com>
diff --git a/README.md b/README.md
index 7adc58e..f1f0fc1 100644
--- a/README.md
+++ b/README.md
@@ -90,10 +90,6 @@
 
      **TODO(akbiggs): Work with Bazel SDK team to get proper support for `--fidl`.**
 
-**TODO(akbiggs): The app occasionally gets stuck on a loading screen
-instead of rendering. Re-running the app usually fixes it. We need to
-fix this.**
-
 ## Making Flutter Engine changes
 
 Running the Flutter app is handled by the Flutter Engine's