Simplify restart func

pkg/shell/shell.go

@@ -2,9 +2,7 @@ package shell
 
 import (
 	"os"
-	"os/exec"
 	"os/signal"
-	"path/filepath"
 	"regexp"
 	"strings"
 	"syscall"
@@ -70,20 +68,3 @@ func RunUntilSignal() {
 	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
 	println("exit with signal:", (<-sigs).String())
 }
-
-// Restart idea taken from https://github.com/tillberg/autorestart
-// Copyright (c) 2015, Dan Tillberg
-func Restart() {
-	path, err := exec.LookPath(os.Args[0])
-	if err != nil {
-		return
-	}
-	path, err = filepath.Abs(path)
-	if err != nil {
-		return
-	}
-	path = filepath.Clean(path)
-	if err = syscall.Exec(path, os.Args, os.Environ()); err != nil {
-		panic(err)
-	}
-}