vendor cleanup: remove unused,non-go and test files

vendor/k8s.io/apimachinery/pkg/util/duration/BUILD

@@ -1,22 +0,0 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
-
-go_library(
-    name = "go_default_library",
-    srcs = ["duration.go"],
-    importpath = "k8s.io/apimachinery/pkg/util/duration",
-    visibility = ["//visibility:public"],
-)
-
-filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]),
-    tags = ["automanaged"],
-    visibility = ["//visibility:private"],
-)
-
-filegroup(
-    name = "all-srcs",
-    srcs = [":package-srcs"],
-    tags = ["automanaged"],
-    visibility = ["//visibility:public"],
-)

vendor/k8s.io/apimachinery/pkg/util/duration/duration.go

@@ -1,43 +0,0 @@
-/*
-Copyright 2018 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package duration
-
-import (
-	"fmt"
-	"time"
-)
-
-// ShortHumanDuration returns a succint representation of the provided duration
-// with limited precision for consumption by humans.
-func ShortHumanDuration(d time.Duration) string {
-	// Allow deviation no more than 2 seconds(excluded) to tolerate machine time
-	// inconsistence, it can be considered as almost now.
-	if seconds := int(d.Seconds()); seconds < -1 {
-		return fmt.Sprintf("<invalid>")
-	} else if seconds < 0 {
-		return fmt.Sprintf("0s")
-	} else if seconds < 60 {
-		return fmt.Sprintf("%ds", seconds)
-	} else if minutes := int(d.Minutes()); minutes < 60 {
-		return fmt.Sprintf("%dm", minutes)
-	} else if hours := int(d.Hours()); hours < 24 {
-		return fmt.Sprintf("%dh", hours)
-	} else if hours < 24*365 {
-		return fmt.Sprintf("%dd", hours/24)
-	}
-	return fmt.Sprintf("%dy", int(d.Hours()/24/365))
-}