I would be very careful about "trimming down" Apache in this manner. You might remove something you don't seem to need, only to find out weeks later that it was necessary at one critical point.
The better way to approach it is to uninstall Apache, and reinstall with the minimal configuration you think you will need, compiling it from scratch. I know this is a pain, but it's the only way to get a clean system.
If you are using Linux, this can be a bit of a problem, because different Linux distributions each have their own layout for Apache files, and you will have to make sure those are cleaned out before recompiling Apache.
I personally tend to configure a
very minimal Linux or FreeBSD Unix box, and then install Apache/PHP/mod_perl from source code. This usually results in just a few megs of data being added to the system. If hard drive space is an issue, I recommend using Slackware or Debian Linux, if you don't want FreeBSD. -------------------------------------------
"Now, this might cause some discomfort..."
(