Remove tool deps from shippable modules.

api/internal/tools/tools.go

@@ -1,25 +0,0 @@
-// +build tools
-
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-// This file exists to automatically trigger installs
-// of the given tools, and is the official 'unofficial'
-// way to declare a dependence on a Go binary until
-// some better technique comes along.
-
-package tools
-
-import (
-	// for code generation
-	_ "golang.org/x/tools/cmd/stringer"
-	// for lint checks
-	_ "github.com/golangci/golangci-lint/cmd/golangci-lint"
-	// REMOVED pluginator from this process, and leaving
-	// this note to discourage its reintroduction,
-	// because pluginator depends on the api, forcing
-	// major version increments in pluginator with each
-	// api release to allow this trick to work and not
-	// introduce cycles.
-	// _ "sigs.k8s.io/kustomize/cmd/pluginator/v2"
-)