Don't enable anyhow's backtrace feature in opt-dist

As of the stabilization of `std::backtrace` in Rust 1.65, this package flag has
no effect other than to enable an unused dependency on the `backtrace` crate.

Cargo.lock

@@ -185,9 +185,6 @@ name = "anyhow"
 version = "1.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34ac096ce696dc2fcabef30516bb13c0a68a11d30131d3df6f04711467681b04"
-dependencies = [
- "backtrace",
-]
 
 [[package]]
 name = "ar_archive_writer"

src/tools/opt-dist/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 build_helper = { path = "../../build_helper" }
 env_logger = "0.11"
 log = "0.4"
-anyhow = { version = "1", features = ["backtrace"] }
+anyhow = "1"
 humantime = "2"
 humansize = "2"
 sysinfo = { version = "0.31.2", default-features = false, features = ["disk"] }