Revert "build(bazel): add first-party Rust wrappers"

This reverts commit 247295dfe3.

bazel/rust.bzl

@@ -1,52 +1,6 @@
-load(
-    "@rules_rust//rust:defs.bzl",
-    _rules_rust_binary = "rust_binary",
-    _rules_rust_library = "rust_library",
-    _rules_rust_test = "rust_test",
-)
 load("//bazel:utils.bzl", "execute", "require_env")
 
 
-def rust_module(name, src, deps = [], **kwargs):
-    native.filegroup(
-        name = name,
-        srcs = [src] + deps,
-        **kwargs
-    )
-
-
-def rust_library(name, src, crate_name = None, modules = [], deps = [], **kwargs):
-    _rules_rust_library(
-        name = name,
-        crate_name = crate_name,
-        crate_root = src,
-        srcs = [src] + modules,
-        deps = deps,
-        **kwargs
-    )
-
-
-def rust_binary(name, src, crate_name = None, deps = [], **kwargs):
-    _rules_rust_binary(
-        name = name,
-        crate_name = crate_name,
-        crate_root = src,
-        srcs = [src],
-        deps = deps,
-        **kwargs
-    )
-
-
-def rust_test(name, src, deps = [], **kwargs):
-    _rules_rust_test(
-        name = name,
-        crate_root = src,
-        srcs = [src],
-        deps = deps,
-        **kwargs
-    )
-
-
 def _rust_repository_impl(repository_ctx):
     root = repository_ctx.path(require_env(repository_ctx, "RUST_TOOLCHAIN_ROOT"))
     rustc = root.get_child("bin/rustc")