[build] Remove unused dependency on Rust.

Change-Id: Iff79d5e85334e9e08563fbee3b0731eb6f3eda33
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/252846
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Liam Appelbe <liama@google.com>
diff --git a/DEPS b/DEPS
index 5eafea0..b5a9a8a 100644
--- a/DEPS
+++ b/DEPS
@@ -139,7 +139,6 @@
   "pub_rev": "9bf4289d6fd5d6872a8929d6312bbd7098f3ea9c", # manually rev'd
   "pub_semver_rev": "5c0b4bfd5ca57fe16f1319c581dc8c882e9b8cb2",
   "root_certificates_rev": "692f6d6488af68e0121317a9c2c9eb393eb0ee50",
-  "rust_revision": "b7856f695d65a8ebc846754f97d15814bcb1c244",
   "shelf_rev": "0371a64bd3b99044ee3158bacf8813bba735a9c7",
   "source_map_stack_trace_rev": "72dbf21a33293b2b8434d0a9751e36f9463981ac",
   "source_maps_rev": "e93565b43a7b6b367789de8ffba969c4ebeeb317",
@@ -556,17 +555,6 @@
       "dep_type": "cipd",
   },
 
-  Var("dart_root") + "/buildtools/" + Var("host_os") + "-" + Var("host_cpu") + "/rust": {
-      "packages": [
-          {
-              "package": "fuchsia/rust/${{platform}}",
-              "version": "git_revision:" + Var("rust_revision"),
-          },
-      ],
-      "condition": "(host_os == 'linux' or host_os == 'mac') and host_cpu == 'x64'",
-      "dep_type": "cipd",
-  },
-
   # Update from https://chrome-infra-packages.appspot.com/p/fuchsia/sdk/gn
   Var("dart_root") + "/third_party/fuchsia/sdk/mac": {
     "packages": [