remove some remaining NO_DBM_REWRITEMAP cruft from mod_rewrite

which broke the build on Win32

mod_rewrite.h didn't spit out the decl of lookup_map_dbmfile
if NO_DBM_REWRITEMAP was still defined, and mod_rewrite.dsp
continued to define NO_DBM_REWRITEMAP

Reported by:          Jerry Baker <jerrybaker@attbi.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96483 13f79535-47bb-0310-9956-ffa450edef68