Removing unreferenced code github/com/emicklei

The code in pkg github.com/emicklei/examples/ is not referenced in kubernetes
codebase. Somehow it was mirrored in the vendor directory in a previous
PR #25365.

This causes problems for godeps which will then include the reference to this
code in the Godeps.json file (among other packages that are not in the vendors
directory).

Removing the directory and its contents fixes the fissue and we believe the
current godeps process should prevent it from re-occurring.

vendor/github.com/emicklei/go-restful/examples/msgpack/msgpack_entity.go

@@ -1,34 +0,0 @@
-package restPack
-
-import (
-	restful "github.com/emicklei/go-restful"
-	"gopkg.in/vmihailenco/msgpack.v2"
-)
-
-const MIME_MSGPACK = "application/x-msgpack" // Accept or Content-Type used in Consumes() and/or Produces()
-
-// NewEntityAccessorMPack returns a new EntityReaderWriter for accessing MessagePack content.
-// This package is not initialized with such an accessor using the MIME_MSGPACK contentType.
-func NewEntityAccessorMsgPack() restful.EntityReaderWriter {
-	return entityMsgPackAccess{}
-}
-
-// entityOctetAccess is a EntityReaderWriter for Octet encoding
-type entityMsgPackAccess struct {
-}
-
-// Read unmarshalls the value from byte slice and using msgpack to unmarshal
-func (e entityMsgPackAccess) Read(req *restful.Request, v interface{}) error {
-	return msgpack.NewDecoder(req.Request.Body).Decode(v)
-}
-
-// Write marshals the value to byte slice and set the Content-Type Header.
-func (e entityMsgPackAccess) Write(resp *restful.Response, status int, v interface{}) error {
-	if v == nil {
-		resp.WriteHeader(status)
-		// do not write a nil representation
-		return nil
-	}
-	resp.WriteHeader(status)
-	return msgpack.NewEncoder(resp).Encode(v)
-}