Migrate zeroize to crate monorepo

Bug: http://b/339424309
Test: treehugger
Change-Id: Iaa625997f7a48413fc6a7f072feba77b5818478c
diff --git a/Android.bp b/Android.bp
index 3be9997..96beb97 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,48 +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_zeroize_derive_license"],
-}
-
-license {
-    name: "external_rust_crates_zeroize_derive_license",
-    visibility: [":__subpackages__"],
-    license_kinds: ["SPDX-license-identifier-Apache-2.0"],
-    license_text: ["LICENSE"],
-}
-
-rust_proc_macro {
-    name: "libzeroize_derive",
-    crate_name: "zeroize_derive",
-    cargo_env_compat: true,
-    cargo_pkg_version: "1.4.2",
-    crate_root: "src/lib.rs",
-    edition: "2021",
-    rustlibs: [
-        "libproc_macro2",
-        "libquote",
-        "libsyn",
-    ],
-    compile_multilib: "first",
-}
-
-rust_test_host {
-    name: "zeroize_derive_test_src_lib",
-    host_cross_supported: false,
-    crate_name: "zeroize_derive",
-    cargo_env_compat: true,
-    cargo_pkg_version: "1.4.2",
-    crate_root: "src/lib.rs",
-    test_suites: ["general-tests"],
-    auto_gen_config: true,
-    test_options: {
-        unit_test: true,
-    },
-    edition: "2021",
-    rustlibs: [
-        "libproc_macro2",
-        "libquote",
-        "libsyn",
-    ],
-}
+// This crate has been migrated to external/rust/android-crates-io.
diff --git a/TEST_MAPPING b/TEST_MAPPING
deleted file mode 100644
index 5f54cfa..0000000
--- a/TEST_MAPPING
+++ /dev/null
@@ -1,17 +0,0 @@
-// Generated by update_crate_tests.py for tests that depend on this crate.
-{
-  "imports": [
-    {
-      "path": "external/rust/crates/zeroize"
-    },
-    {
-      "path": "external/uwb/src"
-    },
-    {
-      "path": "system/keymint/derive"
-    },
-    {
-      "path": "system/keymint/hal"
-    }
-  ]
-}
diff --git a/cargo_embargo.json b/cargo_embargo.json
deleted file mode 100644
index b048231..0000000
--- a/cargo_embargo.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "package": {
-    "zeroize_derive": {
-      "device_supported": false,
-      "host_first_multilib": true
-    }
-  },
-  "run_cargo": false,
-  "tests": true
-}