removed the --with-rtsig_module option from the developer build script.

Author: agentzh

util/build.sh

@@ -44,7 +44,6 @@ ngx-build $force $version \
             --add-module=$home/work/nginx/ngx_http_upstream_keepalive-0.7 \
           --with-select_module \
           --with-poll_module \
-          --with-rtsig_module \
           --without-http_ssi_module \
           --with-debug
           #--add-module=/home/agentz/git/dodo/utils/dodo-hook \