Remove all perl scripts from Tools/Scripts

Tools/Scripts/clean-header-guards

-#!/usr/bin/ruby
-
-require 'find'
-require 'optparse'
-
-options = {}
-OptionParser.new do |opts|
-  opts.banner = "Usage: clean-header-guards [options]"
-
-  opts.on("--prefix [PREFIX]", "Append a header prefix to all guards") do |prefix|
-    options[:prefix] = prefix
-  end
-end.parse!
-
-IgnoredFilenamePatterns = [
-  # ignore headers which are known not to have guard
-  /WebCorePrefix/,
-  /ForwardingHeaders/,
-  %r|bindings/objc|,
-  /vcproj/, # anything inside a vcproj is in the windows wasteland
-
-  # we don't own any of these headers
-  %r|icu/unicode|,
-  %r|platform/graphics/cairo|,
-  %r|platform/image-decoders|,
-
-  /config.h/ # changing this one sounds scary
-].freeze
-
-IgnoreFileNamesPattern = Regexp.union(*IgnoredFilenamePatterns).freeze
-
-Find::find(".") do |filename|
-  next unless filename =~ /\.h$/
-  next if filename.match(IgnoreFileNamesPattern)
-
-  File.open(filename, "r+") do |file|
-    contents = file.read
-    match_results = contents.match(/#ifndef (\S+)\n#define \1/s)
-    if match_results
-      current_guard = match_results[1]
-      new_guard = File.basename(filename).sub('.', '_')
-      new_guard = options[:prefix] + '_' + new_guard  if options[:prefix]
-      contents.gsub!(/#{current_guard}\b/, new_guard)
-    else
-      puts "Ignoring #{filename}, failed to find existing header guards."
-    end
-    tmp_filename = filename + ".tmp"
-    File.open(tmp_filename, "w+") do |new_file|
-      new_file.write(contents)
-    end
-    File.rename tmp_filename, filename
-  end
-end