bazel: Remove some unused deps from WORKSPACE

Change-Id: I42f40006d4d5022395887472c428f146f5123a0e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/106131
Reviewed-by: Rob Mohr <mohrr@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Pigweed-Auto-Submit: Ted Pudlik <tpudlik@google.com>

WORKSPACE

@@ -119,7 +119,7 @@ rules_proto_grpc_toolchains()
 rules_proto_grpc_repos()
 
 # Set up Protobuf rules.
-# Required by: pigweed, com_github_bazelbuild_buildtools.
+# Required by: pigweed.
 # Used in modules: //pw_protobuf.
 http_archive(
     name = "com_google_protobuf",
@@ -252,54 +252,6 @@ register_gcc_arm_none_toolchain()
 # Registers platforms for use with toolchain resolution
 register_execution_platforms("//pw_build/platforms:all")
 
-# Set up Golang toolchain rules.
-# Required by: bazel_gazelle, com_github_bazelbuild_buildtools.
-# Used in modules: None.
-http_archive(
-    name = "io_bazel_rules_go",
-    sha256 = "d1ffd055969c8f8d431e2d439813e42326961d0942bdf734d2c95dc30c369566",
-    urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.24.5/rules_go-v0.24.5.tar.gz",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.24.5/rules_go-v0.24.5.tar.gz",
-    ],
-)
-
-load(
-    "@io_bazel_rules_go//go:deps.bzl",
-    "go_register_toolchains",
-    "go_rules_dependencies",
-)
-
-go_rules_dependencies()
-
-go_register_toolchains()
-
-# Set up bazel package manager for golang.
-# Required by: com_github_bazelbuild_buildtools.
-# Used in modules: None.
-http_archive(
-    name = "bazel_gazelle",
-    sha256 = "b85f48fa105c4403326e9525ad2b2cc437babaa6e15a3fc0b1dbab0ab064bc7c",
-    urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.22.2/bazel-gazelle-v0.22.2.tar.gz",
-        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.22.2/bazel-gazelle-v0.22.2.tar.gz",
-    ],
-)
-
-load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
-
-gazelle_dependencies()
-
-# Set up bazel buildtools (bazel linter and formatter).
-# Required by: pigweed.
-# Used in modules: //:all (bazel specific tools).
-http_archive(
-    name = "com_github_bazelbuild_buildtools",
-    sha256 = "c28eef4d30ba1a195c6837acf6c75a4034981f5b4002dda3c5aa6e48ce023cf1",
-    strip_prefix = "buildtools-4.0.1",
-    url = "https://github.com/bazelbuild/buildtools/archive/4.0.1.tar.gz",
-)
-
 load("//pw_build:target_config.bzl", "pigweed_config")
 
 # Configure Pigweeds backend.