Remove //build/go, this is not used in chromium

build/go/rules.gni

-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-declare_args() {
-  # By default, there is no go build tool, because go builds are not supported.
-  go_build_tool = ""
-}
-
-# Declare a go test binary target.
-#
-# The target generates a go test executable, linking against other C code,
-# which is compiled into a static library and linked against Go.
-#
-# Only works on linux. |go_build_tool| must be set to the absolute path
-# of the go build tool.
-#
-# Variables (all required)
-#   sources: list of .go files to compile
-#   static_library_sources: list of C sources needed for the static library
-#   deps: dependencies for the static library
-
-template("go_test_binary") {
-  # Only available on linux for now.
-  assert(is_linux)
-  assert(defined(invoker.sources))
-  assert(go_build_tool != "")
-
-  static_library_name = target_name + "_static_library"
-
-  static_library(static_library_name) {
-    sources = invoker.static_library_sources
-    deps = invoker.deps
-    complete_static_lib = true
-  }
-
-  action(target_name) {
-    deps = [
-      ":$static_library_name",
-    ]
-    script = "//build/go/go.py"
-    outputs = [
-      "${target_out_dir}/${target_name}",
-    ]
-
-    # Since go test does not permit specifying an output directory or output
-    # binary name, we create a temporary build directory, and the python
-    # script will later identify the output, copy it to the target location,
-    # and clean up the temporary build directory.
-    build_dir = "${target_out_dir}/${target_name}_build"
-    args = [
-             "--",
-             "${go_build_tool}",
-             rebase_path(build_dir, root_build_dir),
-             rebase_path(target_out_dir, root_build_dir) + "/${target_name}",
-             rebase_path("//", root_build_dir),
-             "-I" + rebase_path("//"),
-             " -L" + rebase_path(target_out_dir) + " -l" + static_library_name +
-                 " -lstdc++ -lpthread -lm -lglib-2.0",
-             "test",
-             "-c",
-           ] + rebase_path(invoker.sources, build_dir)
-  }
-}
-
-template("go_shared_library") {
-  # Only available on android for now.
-  assert(is_android)
-  assert(defined(invoker.sources))
-  assert(go_build_tool != "")
-
-  static_library_name = target_name + "_static_library"
-
-  static_library(static_library_name) {
-    complete_static_lib = true
-    deps = invoker.deps
-  }
-
-  action(target_name) {
-    deps = [
-      ":$static_library_name",
-    ]
-    script = "//build/go/go.py"
-    outputs = [
-      "${target_out_dir}/${target_name}",
-    ]
-
-    # Since go test does not permit specifying an output directory or output
-    # binary name, we create a temporary build directory, and the python
-    # script will later identify the output, copy it to the target location,
-    # and clean up the temporary build directory.
-    build_dir = "${target_out_dir}/${target_name}_build"
-    args = [
-             "--",
-             "CGO_ENABLED=1 GOOS=android GOARCH=arm GOARM=7 ${go_build_tool}",
-             rebase_path(build_dir, root_build_dir),
-             rebase_path(target_out_dir, root_build_dir) + "/${target_name}",
-             rebase_path("//", root_build_dir),
-             "-I" + rebase_path("//"),
-             " -L" + rebase_path(target_out_dir) + " -l" + static_library_name +
-                 "",
-             "build -ldflags=-shared",
-           ] + rebase_path(invoker.sources, build_dir)
-  }
-}