This reverts commit 6aa6f92f.

It caused is_deleted() subroutine to output warnings when dealing with
old, legacy gitweb blobdiff URLs without either 'hb' or 'hpb'
parameters.

This fixes http://bugs.debian.org/469083Signed-off-by: NJakub Narebski <jnareb@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>