[cleanup] Remove dead ANTLR build script for Torque parser

This CL removes a build script that was used to create ANTLR visitors
for Torque parsing. As Torque rolls its own parser now, this script
can safely be removed.

R=tebbi@chromium.org

Bug: v8:9183
Change-Id: Id56ee590d79e5c849ac111e8825cd3733cd55d90
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1587379Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61069}

tools/torque/make-torque-parser.py

-#!/usr/bin/env python
-# Copyright 2014 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""This program either generates the parser files for Torque, generating
-the source and header files directly in V8's src directory."""
-
-import subprocess
-import sys
-import os
-import ntpath
-import re
-
-cwd = os.getcwd()
-tools = ntpath.dirname(sys.argv[0]);
-grammar = tools + '/../../src/torque/Torque.g4'
-basename = ntpath.basename(grammar)
-dirname = ntpath.dirname(grammar)
-os.chdir(dirname)
-cargs = ['java', '-Xmx500M', 'org.antlr.v4.Tool', '-visitor', basename]
-result = subprocess.call(cargs)
-os.chdir(cwd)
-
-def fix_file(filename):
-  is_header = re.search(r'\.h', filename) is not None;
-  header_macro = filename.upper();
-  header_macro = re.sub('\.', '_', header_macro);
-  header_macro = "V8_TORQUE_" + header_macro + '_';
-
-  copyright = '// Copyright 2018 the V8 project authors. All rights reserved.\n'
-  copyright += '// Use of this source code is governed by a BSD-style license that can be\n'
-  copyright += '// found in the LICENSE file.\n'
-  file_path = tools + '/../../src/torque/' + filename;
-  temp_file_path = file_path + '.tmp'
-  output_file = open(temp_file_path, 'w')
-  output_file.write(copyright);
-  if is_header:
-    output_file.write('#ifndef ' + header_macro + '\n');
-    output_file.write('#define ' + header_macro + '\n');
-
-  with open(file_path) as f:
-    content = f.readlines()
-  for x in content:
-    x = re.sub(';;', ';', x)
-    x = re.sub('antlr4-runtime\.h', './antlr4-runtime.h', x)
-    x = re.sub('  TorqueParser.antlr4', '  explicit TorqueParser(antlr4', x)
-    x = re.sub('  TorqueLexer.antlr4', '  explicit TorqueLexer(antlr4', x)
-    if not re.search('= 0', x):
-      x = re.sub('virtual', '', x)
-    output_file.write(x)
-
-  if is_header:
-    output_file.write('#endif  // ' + header_macro + '\n');
-  output_file.close();
-
-  subprocess.call(['rm', file_path])
-  subprocess.call(['mv', temp_file_path, file_path])
-
-fix_file('TorqueBaseListener.h');
-fix_file('TorqueBaseListener.cpp');
-fix_file('TorqueBaseVisitor.h');
-fix_file('TorqueBaseVisitor.cpp');
-fix_file('TorqueLexer.h');
-fix_file('TorqueLexer.cpp');
-fix_file('TorqueParser.h');
-fix_file('TorqueParser.cpp');
-fix_file('TorqueListener.h');
-fix_file('TorqueListener.cpp');
-fix_file('TorqueVisitor.h');
-fix_file('TorqueVisitor.cpp');