CentOS内核升级后删除多余的启动项

CentOS内核升级后，如何删除多余的启动项？

1. # uname -a 查看当前内核的版本号

Linux localhost.localdomain 2.6.32-358.23.2.el6.i686 #1 SMP Wed Oct 16 17:21:31 UTC 2013 i686 i686 i386 GNU/Linux
2. # rpm -qa | grep kernel查找要删除的版本号
kernel-firmware-2.6.32-358.23.2.el6.noarch

abrt-addon-kerneloops-2.0.8-16.el6.centos.1.i686
kernel-devel-2.6.32-358.el6.i686

dracut-kernel-004-303.el6.noarch

kernel-2.6.32-358.23.2.el6.i686

kernel-devel-2.6.32-358.23.2.el6.i686
kernel-2.6.32-358.el6.i686

kernel-headers-2.6.32-358.23.2.el6.i686

libreport-plugin-kerneloops-2.0.9-15.el6.centos.1.i686

以上是我电脑上的内核版本号，其中红色为要删除的版本号
3. # yum remove kernel-devel-2.6.32-358.el6.i686

    # yum remove kernel-2.6.32-358.el6.i686

4. 查看grub.conf发现多余的启动项已经删除