yonik removed ConstantScoreprefixQuery in r950784, but forgot to remove this usage of it (it was never migrated to lucene because it's trivial to build with a PrefixFilter)
yonik removed ConstantScoreprefixQuery in r950784, but forgot to remove this usage of it (it was never migrated to lucene because it's trivial to build with a PrefixFilter)

git-svn-id: 308d55f399f3bd9aa0560a10e81a003040006c48@950853 13f79535-47bb-0310-9956-ffa450edef68

cscorley/solr-only-mirror,cscorley/solr-only-mirror,cscorley/solr-only-mirror