gccrs: remove unused file

gcc/rust/ChangeLog:

	* Make-lang.in (GRS_OBJS): Remove rust-macro.o.
	* ast/rust-macro.cc: Removed.

Signed-off-by: Marc Poulhiès <dkm@kataplop.net>

gcc/rust/Make-lang.in

@@ -123,7 +123,6 @@ GRS_OBJS = \
     rust/rust-keyword-values.o \
     rust/rust-abi.o \
     rust/rust-token-converter.o \
-    rust/rust-macro.o \
     rust/rust-ast-lower.o \
     rust/rust-ast-lower-base.o \
     rust/rust-ast-lower-pattern.o \

gcc/rust/ast/rust-macro.cc

@@ -1,25 +0,0 @@
-// Copyright (C) 2020-2025 Free Software Foundation, Inc.
-
-// This file is part of GCC.
-
-// GCC is free software; you can redistribute it and/or modify it under
-// the terms of the GNU General Public License as published by the Free
-// Software Foundation; either version 3, or (at your option) any later
-// version.
-
-// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
-// WARRANTY; without even the implied warranty of MERCHANTABILITY or
-// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-// for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with GCC; see the file COPYING3.  If not see
-// <http://www.gnu.org/licenses/>.
-
-#include "rust-macro.h"
-
-namespace Rust {
-namespace AST {
-
-} // namespace AST
-} // namespace Rust