Move gnu-shogi to homebrew-games.

Closes Homebrew/homebrew#17359.

Formula/gnu-shogi.rb

@@ -1,47 +0,0 @@
-require 'formula'
-
-class GnuShogi < Formula
-  homepage 'http://www.cs.caltech.edu/~mvanier/hacking/gnushogi/gnushogi.html'
-  url 'http://www.cs.caltech.edu/~mvanier/hacking/gnushogi/gnushogi-1.3.2.tar.gz'
-  sha1 '6135ec3eb84917d0dc2cab9ac982818ed41aad87'
-
-  depends_on :x11
-
-  def patches
-    # gcc 4.2.1 flags the following error
-    # In file included from attacks.c:32:
-    # gnushogi.h:144: error: conflicting types for ‘setlinebuf’
-    # /usr/include/stdio.h:351: error: previous declaration of ‘setlinebuf’ was here
-    #
-    # My patch fixes this by changing the declared return type of setlinebuf in
-    # gnushogi.h to int to match up with stdio.h's declaration
-    # It was returning void anyway, so unless something errantly relies on it not
-    # leaving something in the return register, this shouldn't break anything
-    DATA
-  end
-
-  def install
-    system "./configure", "--disable-debug", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}",
-                          "--x-include=#{MacOS::X11.include}",
-                          "--x-lib=#{MacOS::X11.lib}"
-    system "make"
-    system "make", "install", "MANDIR=#{man6}", "INFODIR=#{info}"
-  end
-end
-
-
-__END__
-diff --git a/gnushogi/gnushogi.h b/gnushogi/gnushogi.h
-index 423a864..1d930c2 100644
---- a/gnushogi/gnushogi.h
-+++ b/gnushogi/gnushogi.h
-@@ -141,7 +141,7 @@ typedef unsigned long  ULONG;
-
- #ifdef HAVE_SETLINEBUF
- /* Not necessarily included in <stdio.h> */
--extern void setlinebuf(FILE *__stream);
-+extern int setlinebuf(FILE *__stream);
- #endif
-
- #define RWA_ACC "r+"