remove viper

WIP

vendor/github.com/spf13/afero/const_win_unix.go

@@ -1,25 +0,0 @@
-// Copyright © 2016 Steve Francia <spf@spf13.com>.
-//
-// 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.
-// +build !darwin
-// +build !openbsd
-// +build !freebsd
-// +build !dragonfly
-// +build !netbsd
-
-package afero
-
-import (
-	"syscall"
-)
-
-const BADFD = syscall.EBADFD