Remove all old source files

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

@@ -1,23 +0,0 @@
-package restful
-
-// Copyright 2013 Ernest Micklei. All rights reserved.
-// Use of this source code is governed by a license
-// that can be found in the LICENSE file.
-
-import "fmt"
-
-// ServiceError is a transport object to pass information about a non-Http error occurred in a WebService while processing a request.
-type ServiceError struct {
-	Code    int
-	Message string
-}
-
-// NewError returns a ServiceError using the code and reason
-func NewError(code int, message string) ServiceError {
-	return ServiceError{Code: code, Message: message}
-}
-
-// Error returns a text representation of the service error
-func (s ServiceError) Error() string {
-	return fmt.Sprintf("[ServiceError:%v] %v", s.Code, s.Message)
-}