removing "--with-bonjour" to debug issue

```bash
$ brew install postgresql8
==> Downloading http://ftp.postgresql.org/pub/source/v8.4.19/postgresql-8.4.19.tar.bz2
######################################################################## 100.0%
==> Patching
patching file contrib/uuid-ossp/uuid-ossp.c
==> ./configure --prefix=/usr/local/Cellar/postgresql8/8.4.19 --datadir=/usr/local/Cellar/postgresql8/8.4.19/share/postgresql8 --docdir=/usr/local/Cellar/postgresql8/8.4.19/share/doc/postgres
checking for libxslt/xslt.h... yes
checking DNSServiceDiscovery/DNSServiceDiscovery.h usability... no
checking DNSServiceDiscovery/DNSServiceDiscovery.h presence... no
checking for DNSServiceDiscovery/DNSServiceDiscovery.h... no
configure: error: header file <DNSServiceDiscovery/DNSServiceDiscovery.h> is required for Bonjour
```