generators: delete dead code

We don't use this anymore.

generators/defaults.go

-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library 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 Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-//go:generate go run defaults.go default.json defs.go
-
-package main //build !none
-
-import (
-	"encoding/json"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strings"
-)
-
-func fatalf(str string, v ...interface{}) {
-	fmt.Fprintf(os.Stderr, str, v...)
-	os.Exit(1)
-}
-
-type setting struct {
-	Value   int64  `json:"v"`
-	Comment string `json:"d"`
-}
-
-func main() {
-	if len(os.Args) < 3 {
-		fatalf("usage %s <input> <output>\n", os.Args[0])
-	}
-
-	content, err := ioutil.ReadFile(os.Args[1])
-	if err != nil {
-		fatalf("error reading file %v\n", err)
-	}
-
-	m := make(map[string]setting)
-	json.Unmarshal(content, &m)
-
-	filepath := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "params", os.Args[2])
-	output, err := os.OpenFile(filepath, os.O_RDWR|os.O_CREATE, 0666)
-	if err != nil {
-		fatalf("error opening file for writing %v\n", err)
-	}
-
-	output.WriteString(`// DO NOT EDIT!!!
-// AUTOGENERATED FROM generators/defaults.go
-
-package params
-
-import "math/big"
-
-var (
-`)
-
-	for name, setting := range m {
-		output.WriteString(fmt.Sprintf("%s=big.NewInt(%d) // %s\n", strings.Title(name), setting.Value, setting.Comment))
-	}
-
-	output.WriteString(")\n")
-	output.Close()
-
-	cmd := exec.Command("gofmt", "-w", filepath)
-	if err := cmd.Run(); err != nil {
-		fatalf("gofmt failed: %v\n", err)
-	}
-}