Rust/bazel: Port to bzlmod.

This gets rid of our last workspace dependency.
In particular, this change also gets rid of the checked-in extra
lock files that took forever to generate.

ruby/extractor/BUILD.bazel

@@ -1,5 +1,5 @@
 load("@ruby_deps//:defs.bzl", "aliases", "all_crate_deps")
-load("@semmle_code//:common.bzl", "codeql_rust_binary")
+load("//misc/bazel:rust.bzl", "codeql_rust_binary")
 
 codeql_rust_binary(
     name = "extractor",

ruby/extractor/Cargo.toml

@@ -6,15 +6,6 @@ version = "0.1.0"
 authors = ["GitHub"]
 edition = "2021"
 
-# When changing/updating these, the `cargo-bazel-lock.json` file has to be regenerated.
-# Run `CARGO_BAZEL_REPIN=true CARGO_BAZEL_REPIN_ONLY=ruby_deps ./tools/bazel sync --only=ruby_deps`
-# in the `semmle-code` repository to do so.
-# For more information, check out the documentation at
-# https://bazelbuild.github.io/rules_rust/crate_universe.html#repinning--updating-dependencies
-# In the future, the hope is to move this handling of the dependencies entirely into the `codeql` repository,
-# but that depends on `rules_rust` being fully compatible with bzlmod, which they aren't yet
-# (c.f. https://github.com/bazelbuild/rules_rust/issues/2452).
-# Warning: The process takes >5min on my M1 mac, so do wait for a while.
 [dependencies]
 tree-sitter = ">= 0.22.6"
 tree-sitter-embedded-template = { git = "https://github.com/tree-sitter/tree-sitter-embedded-template.git", rev = "38d5004a797298dc42c85e7706c5ceac46a3f29f" }