Change EfiBootManagerDeleteLoadOptionVariable() to not just
remove #### from BootOrder but also remove Boot#### variable.
The old behavior tries to do less for performance but it leaves
unreferenced Boot#### which cannot be reclaimed in variable
reclaim operation though the Boot#### will be eventually be overwritten
by EfiBootManagerAddLoadOptionVariable().
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19626 6f19259b-4bc3-4df7-8a09-765794883524
2e26862c6d