Backport textwrap update

The 2.x branch of clap is not supported upstream. Backport the upgrade
to the new version of textwrap until 3.x is officially released.
Based on https://github.com/clap-rs/clap/pull/2324.

Test: mm
Bug: 178357400
Change-Id: I7c0419965db181b00bb9ff59a7e61dc7f77675ca
diff --git a/Android.bp b/Android.bp
index 8180599..2edc035 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,34 +1,5 @@
 // This file is generated by cargo2android.py --run --dependencies --features= --device.
-
-package {
-    default_applicable_licenses: ["external_rust_crates_clap_license"],
-}
-
-// Added automatically by a large-scale-change that took the approach of
-// 'apply every license found to every target'. While this makes sure we respect
-// every license restriction, it may not be entirely correct.
-//
-// e.g. GPL in an MIT project might only apply to the contrib/ directory.
-//
-// Please consider splitting the single license below into multiple licenses,
-// taking care not to lose any license_kind information, and overriding the
-// default license using the 'licenses: [...]' property on targets as needed.
-//
-// For unused files, consider creating a 'fileGroup' with "//visibility:private"
-// to attach the license to, and including a comment whether the files may be
-// used in the current project.
-// See: http://go/android-license-faq
-license {
-    name: "external_rust_crates_clap_license",
-    visibility: [":__subpackages__"],
-    license_kinds: [
-        "SPDX-license-identifier-Apache-2.0",
-        "SPDX-license-identifier-MIT",
-    ],
-    license_text: [
-        "LICENSE-MIT",
-    ],
-}
+// Do not modify this file as changes will be overridden on upgrade.
 
 rust_library {
     name: "libclap",
@@ -40,11 +11,9 @@
     rustlibs: [
         "libbitflags",
         "libtextwrap",
-        "libunicode_width",
     ],
 }
 
 // dependent_library ["feature_list"]
 //   bitflags-1.2.1 "default"
-//   textwrap-0.11.0
-//   unicode-width-0.1.8 "default"
+//   textwrap-0.13.3