Update go dependencies (#2234)

vendor/github.com/emicklei/go-restful/logger.go

@@ -1,32 +0,0 @@
-package restful
-
-// Copyright 2014 Ernest Micklei. All rights reserved.
-// Use of this source code is governed by a license
-// that can be found in the LICENSE file.
-import (
-	"github.com/emicklei/go-restful/log"
-)
-
-var trace bool = false
-var traceLogger log.StdLogger
-
-func init() {
-	traceLogger = log.Logger // use the package logger by default
-}
-
-// TraceLogger enables detailed logging of Http request matching and filter invocation. Default no logger is set.
-// You may call EnableTracing() directly to enable trace logging to the package-wide logger.
-func TraceLogger(logger log.StdLogger) {
-	traceLogger = logger
-	EnableTracing(logger != nil)
-}
-
-// SetLogger exposes the setter for the global logger on the top-level package
-func SetLogger(customLogger log.StdLogger) {
-	log.SetLogger(customLogger)
-}
-
-// EnableTracing can be used to Trace logging on and off.
-func EnableTracing(enabled bool) {
-	trace = enabled
-}