remove old error generator

tools/generrorgen/main.go

@@ -1,44 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"log"
-	"os"
-	"strings"
-)
-
-var (
-	pkg  = flag.String("pkg", "", "Target package")
-	path = flag.String("path", "", "Path")
-)
-
-func main() {
-	flag.Parse()
-
-	if len(*pkg) == 0 {
-		panic("Package is not specified.")
-	}
-
-	if len(*path) == 0 {
-		panic("Path is not specified.")
-	}
-
-	paths := strings.Split(*path, ",")
-	for i := range paths {
-		paths[i] = "\"" + paths[i] + "\""
-	}
-	pathStr := strings.Join(paths, ", ")
-
-	file, err := os.OpenFile("errors.generated.go", os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
-	if err != nil {
-		log.Fatalf("Failed to generate errors.generated.go: %v", err)
-	}
-	defer file.Close()
-
-	fmt.Fprintln(file, "package", *pkg)
-	fmt.Fprintln(file, "")
-	fmt.Fprintln(file, "import \"v2ray.com/core/common/errors\"")
-	fmt.Fprintln(file, "")
-	fmt.Fprintln(file, "func newError(values ...interface{}) *errors.Error { return errors.New(values...).Path("+pathStr+") }")
-}