misc/swig: remove old broken Makefile

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7786046

misc/swig/stdio/Makefile

-# 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=swig/file
-SWIGFILES=\
-	file.swig
-
-CLEANFILES+=hello
-
-include ../../../src/Make.pkg
-
-%: install %.go
-	$(GC) $(GCFLAGS) $(GCIMPORTS) $*.go
-	$(LD) $(SWIG_RPATH) -o $@ $*.$O