Migrate 26 crates to monorepo

tokio-util
tower
tower-layer
tower-service
tracing
tracing-attributes
tracing-core
tracing-subscriber
try-lock
tungstenite
twox-hash
ucd-trie
unicode-bidi
unicode-normalization
unicode-segmentation
unicode-width
unsafe-libyaml
userfaultfd
utf-8
uuid
weak-table
webpki
which
winnow
x509-cert
xml-rs

Bug: http://b/339424309
Test: treehugger
Change-Id: I6a5d8e50ae38f0a8bdb6397cdc7d393051e647bb
diff --git a/Android.bp b/Android.bp
index d2aa990..96beb97 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,65 +1 @@
-// This file is generated by cargo_embargo.
-// Do not modify this file because the changes will be overridden on upgrade.
-
-package {
-    default_applicable_licenses: ["external_rust_crates_tower_license"],
-}
-
-license {
-    name: "external_rust_crates_tower_license",
-    visibility: [":__subpackages__"],
-    license_kinds: ["SPDX-license-identifier-MIT"],
-    license_text: ["LICENSE"],
-}
-
-rust_library {
-    name: "libtower",
-    host_supported: true,
-    crate_name: "tower",
-    cargo_env_compat: true,
-    cargo_pkg_version: "0.4.13",
-    crate_root: "src/lib.rs",
-    edition: "2018",
-    features: [
-        "__common",
-        "balance",
-        "buffer",
-        "discover",
-        "futures-core",
-        "futures-util",
-        "indexmap",
-        "limit",
-        "load",
-        "make",
-        "pin-project",
-        "pin-project-lite",
-        "rand",
-        "ready-cache",
-        "slab",
-        "timeout",
-        "tokio",
-        "tokio-util",
-        "tracing",
-        "util",
-    ],
-    rustlibs: [
-        "libfutures_core",
-        "libfutures_util",
-        "libindexmap",
-        "libpin_project",
-        "libpin_project_lite",
-        "librand",
-        "libslab",
-        "libtokio",
-        "libtokio_util",
-        "libtower_layer",
-        "libtower_service",
-        "libtracing",
-    ],
-    apex_available: [
-        "//apex_available:platform",
-        "//apex_available:anyapex",
-    ],
-    product_available: true,
-    vendor_available: true,
-}
+// This crate has been migrated to external/rust/android-crates-io.
diff --git a/cargo_embargo.json b/cargo_embargo.json
deleted file mode 100644
index ef2a686..0000000
--- a/cargo_embargo.json
+++ /dev/null
@@ -1,25 +0,0 @@
-{
-  "features":[
-    "__common",
-    "balance",
-    "buffer",
-    "discover",
-    "futures-core",
-    "futures-util",
-    "indexmap",
-    "limit",
-    "load",
-    "make",
-    "pin-project",
-    "pin-project-lite",
-    "rand",
-    "ready-cache",
-    "slab",
-    "timeout",
-    "tokio",
-    "tokio-util",
-    "tracing",
-    "util"
-  ],
-  "run_cargo":false
-}
\ No newline at end of file