go1.10: remove duplicate file go1.10.go

We use main.go everywhere else and I'd added an auto-generated main.go
here in CL 130977.

Fixes golang/go#27262

Change-Id: Ic9a76eb33315e922c2156c76fe4900e218d8787d
Reviewed-on: https://go-review.googlesource.com/131655
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/go1.10/go1.10.go b/go1.10/go1.10.go
deleted file mode 100644
index 3838b69..0000000
--- a/go1.10/go1.10.go
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// The go1.10 command runs the go command from go1.10.
-//
-// To install, run:
-//
-//     $ go get golang.org/dl/go1.10
-//     $ go1.10 download
-//
-// And then use the go1.10 command as if it were your normal go
-// command.
-//
-// See the release notes at https://golang.org/doc/go1.10
-//
-// File bugs at https://golang.org/issues/new
-package main
-
-import "golang.org/dl/internal/version"
-
-func main() {
-	version.Run("go1.10")
-}