eliminates boosting from group iterator as couldn't tell if it improved search results at all, but it definitely made them slower, a=chris

Author	Chris Pollett <chris@pollett.org>
Author date	2011-08-07 08:Aug:th
Author local date	2011-08-07 01:Aug:th -0700
Committer	Chris Pollett <chris@pollett.org>
Committer date	2011-08-07 08:Aug:th
Committer local date	2011-08-07 01:Aug:th -0700
Commit	1c19bed67425910babfe30ce0f8c33f5299ed861
Tree	ab216aa6ff70755f27633be8a59c7a29e4d73c7a
Parent	28168d1b18e5891750d7e118b152d117bc83a26b

eliminates boosting from group iterator as couldn't tell if it improved search results at all, but it definitely made them slower, a=chris

Affected files:
lib/index_bundle_iterators/group_iterator.php