Description of problem:
Insert the installation media(CD-ROM/USB) in uefi mode machine, and start the system, When the automatic boot prompt appears, press Enter.
then selected boot option "Uninstall" to uninstall existing rhev-h
After uninstall rhev-h in uefi mode machine success, then reboot machine from uefi mode,but still noticed that efi entries exist on uefi mode.

#remove existing efi entries patch
                efi_mgr_cmd = "efibootmgr|grep '%s'" % PRODUCT_SHORT
                efi_mgr = subprocess_closefds(efi_mgr_cmd, shell=True, \
                                              stdout=PIPE, stderr=STDOUT)
                efi_out = efi_mgr.stdout.read().strip()
                logger.debug(efi_mgr_cmd)
                logger.debug(efi_out)
                for line in efi_out.splitlines():
                    if not "Warning" in line:
                        num = line[4:8] # grabs 4 digit hex id
                        cmd = "efibootmgr -B -b %s" % num
                        system(cmd)

Version-Release number of selected component (if applicable):
rhev-hypervisor-advanced-6.4-20130410.0.el6ev

How reproducible:
100% 
 
Steps to Reproduce:
1.Insert the installation media(CD-ROM/USB) in uefi mode, and start the system.
2.Start the system. When the automatic boot prompt appears, press Enter.
3.selected boot option "Uninstall".

Actual result:
After uninstall rhev-h in uefi mode machine success, then reboot machine from uefi mode,but still noticed that efi entries exist on uefi mode.

Expect result:
After uninstall rhev-h in uefi mode machine success, then reboot machine from uefi mode,
it should remove existing efi entries

Additional info:
1.[root@dhcp-10-195 admin]# efibootmgr |grep "RHEV Hypervisor Advanced"
Boot0009* RHEV Hypervisor Advanced
[root@dhcp-10-195 admin]# efibootmgr -B -b 0009
BootCurrent: 0009
Timeout: 1 seconds
BootOrder: 0004,0001,0002,0000,0003,0006,0007,0008,0005,0013
Boot0000* Diskette Drive
Boot0001* SAMSUNG HD322GM
Boot0002* USB Storage Device
Boot0003* CD/DVD/CD-RW Drive
Boot0004* Onboard NIC
Boot0005* CDROM
Boot0006* RHEV Hypervisor
Boot0007* oVirt Node Hypervisor
Boot0008* oVirt Node Hypervisor
Boot0013* UEFI: INT13(RAID,0x80)
BootFFFA* Internal Shell       
BootFFFB* Diagnostic Boot      
BootFFFC* Temporary Boot Menu  
BootFFFD* Graphic Setup        
BootFFFE* Text Setup           
[root@dhcp-10-195 admin]# efibootmgr |grep "RHEV Hypervisor Advanced"
2.reboot rhev-h, it have removed existing efi entry "RHEV Hypervisor Advanced"