Update copyright to match current dependencies

It looks like we no longer depend on some of these crates (we get
lintian warnings), so let's remove them from the copyright file.

debian/copyright

@@ -241,49 +241,26 @@ Files: vendor_rust/bitflags/*
        vendor_rust/libc/*
        vendor_rust/heck/*
        vendor_rust/log/*
-       vendor_rust/num-integer/*
-       vendor_rust/num-traits/*
        vendor_rust/quote/*
        vendor_rust/time/*
-       vendor_rust/unicode-width/*
 Copyright: 2014-2020 The Rust Project Developers
 License: MIT
 
-Files: vendor_rust/bumpalo/*
-Copyright: 2019 Nick Fitzgerald
-License: MIT
-
-Files: vendor_rust/cc/*
-       vendor_rust/js-sys/*
-       vendor_rust/cfg-if/*
+Files: vendor_rust/cfg-if/*
        vendor_rust/pkg-config/*
        vendor_rust/proc-macro2/*
        vendor_rust/toml/*
-       vendor_rust/wasm-bindgen-*/*
 Copyright: 2014 Alex Crichton
 License: MIT
 
 Files: vendor_rust/cfg-expr/*
 Copyright: 2019 Embark Studios
 License: MIT
 
-Files: vendor_rust/chrono/*
-Copyright: 2014
-License: MIT
-
-Files: vendor_rust/core-foundation-sys/*
-Copyright: 2012-2013 Mozilla Foundation
-License: MIT
-
 Files: vendor_rust/futures-*/*
 Copyright: 2017 The Tokio Authors / 2016 Alex Crichton
 License: MIT
 
-Files: vendor_rust/iana-time-zone/*
-       vendor_rust/iana-time-zone-haiku/*
-Copyright: 2020 Andrew D. Straw
-License: MIT
-
 Files: vendor_rust/pin-utils/*
 Copyright: 2018 The pin-utils authors
 License: MIT
@@ -301,11 +278,6 @@ Files: vendor_rust/smallvec/*
 Copyright: 2018 The Servo Project Developers
 License: MIT
 
-Files: vendor_rust/termcolor/*
-       vendor_rust/winapi-util/*
-Copyright: 2015-2017 Andrew Gallant
-License: MIT
-
 Files: vendor_rust/unicode-ident/*
 Copyright: 1991-2022 Unicode, Inc.
 License: Unicode
@@ -322,10 +294,6 @@ Files: vendor_rust/winapi/*
 Copyright: 2015-2018 The winapi-rs Developers
 License: MIT
 
-Files: vendor_rust/android_system_properties/*
-Copyright: 2013, 2016 Nicolas Silva
-License: MIT or Apache-2.0
-
 License: Apache-2.0
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,