[setui] Remove byteorder dependency

Its use was removed in 90bd169896e51c3ffe7d3e78e7da1328c0913ac9.

Change-Id: I56a2283d2836d19c9f95088e6db6ef5839f32651
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/515238
Fuchsia-Auto-Submit: Tamir Duberstein <tamird@google.com>
Reviewed-by: Paul Faria <paulfaria@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/garnet/bin/setui/BUILD.gn b/garnet/bin/setui/BUILD.gn
index 86c83e3..834afbc 100644
--- a/garnet/bin/setui/BUILD.gn
+++ b/garnet/bin/setui/BUILD.gn
@@ -55,7 +55,6 @@
     "//third_party/rust_crates:anyhow",
     "//third_party/rust_crates:async-trait",
     "//third_party/rust_crates:bitflags",
-    "//third_party/rust_crates:byteorder",
     "//third_party/rust_crates:chrono",
     "//third_party/rust_crates:futures",
     "//third_party/rust_crates:glob",