test: remove a couple of bad tests that duplicate declbad.go

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5673089

test/fixedbugs/bug036.go

-// ! $G $D/$F.go >/dev/null
-// # ignoring error messages...
-
-// Copyright 2009 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.
-
-package main
-
-func main() {
-	s := float(0);
-	s := float(0);  // BUG redeclaration
-}

test/fixedbugs/bug038.go

-// ! $G $D/$F.go >/dev/null
-// # ignoring error messages...
-
-// Copyright 2009 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.
-
-package main
-
-func main() {
-	var z [3]byte;
-	z := new([3]byte);  // BUG redeclaration
-}