misc/cgo/test: remove unused Makefile

R=golang-dev, minux.ma, iant
CC=golang-dev
https://golang.org/cl/6459091

misc/cgo/test/Makefile

@@ -1,48 +0,0 @@
-# Copyright 2011 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.
-
-include ../../../src/Make.inc
-
-TARG=runtime/cgotest
-
-CGOFILES=\
-	align.go\
-	basic.go\
-	callback.go\
-	env.go\
-	exports.go\
-	helpers.go\
-	issue1222.go\
-	issue1328.go\
-	issue1560.go\
-	issue2462.go\
-	duplicate_symbol.go\
-
-CGO_OFILES=\
-	callback_c.o\
-
-OFILES=\
-	runtime.$O\
-
-ifeq ($(GOOS),windows)
-GCCVERSION=$(shell gcc -dumpversion)
-ifeq ($(GOARCH),386)
-GCCLIBDIR=/mingw/lib/gcc/mingw32/$(GCCVERSION)
-CHKSTK=_chkstk.o
-else
-GCCLIBDIR=/mingw/lib/gcc/x86_64-w64-mingw32/$(GCCVERSION)
-CHKSTK=_chkstk_ms.o
-endif
-
-CGOFILES+=sleep_windows.go
-CGO_OFILES+=$(CHKSTK)
-
-$(CHKSTK):
-	ar -x "$(GCCLIBDIR)/libgcc.a" $@
-endif
-
-include ../../../src/Make.pkg
-
-test:
-	echo cgo: tests disabled. gotest is gone. TODO