ShellPkg: UefiHandleParsingLib: remove tautological comparison

ShellPkg: UefiHandleParsingLib: remove tautological comparison

The code being removed in this patch dates back to git commit a405b86d274d
(Sep 14, 2010; "udk2010.up2.shell initial release."). The condition always
evaluates to true, and it breaks DEBUG builds of ArmVirtPkg with gcc-6.1:

  ShellPkg/Library/UefiHandleParsingLib/UefiHandleParsingLib.c:
    In function 'ParseHandleDatabaseByRelationshipWithType':
  ShellPkg/Library/UefiHandleParsingLib/UefiHandleParsingLib.c:2465:76:
    error: self-comparison always evaluates to true
    [-Werror=tautological-compare]
         ASSERT((*HandleType)[HandleIndex] == (*HandleType)[HandleIndex]);

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Michael Zimmermann <sigmaepsilon92@gmail.com>
Reported-by: Gerd Hoffmann <kraxel@redhat.com>
Reported-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Suggested-by: Jaben Carsey <jaben.carsey@intel.com>
Ref: http://thread.gmane.org/gmane.comp.bios.edk2.devel/13794/focus=13939
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>