README: Trim redundant info to work around GitHub rendering bug.

This removes an explicit enumeration of most BBS config files from
the config overview section. The main reason this is being done is
to work around a known GitHub bug that causes issues rendering large
RST files. Since the README is currently just over the threshold that
causes rendering to fail, this trims some fat so that the README will
render on GitHub's website again. However, the removed lines don't
contain any new information, so this is just as well.

README.rst

@@ -130,89 +130,35 @@ System Configuration
 ~~~~~~~~~~~~~~~~~~~~
 
 Configuration of LBBS and modules are done entirely through INI config files. Different parts of LBBS have their own config files, as does each module that uses one.
+Config files go in :code:`/etc/lbbs` and sample configuration files exist in the :code:`configs` subdirectory of the source tree.
+Each sample config file documents all available options. Refer to the sample configs for all relevant configuration.
 
-Config files go in :code:`/etc/lbbs` and are as follows:
-
-* :code:`auth.conf` - User authentication configuration
+A few especially important configuration files:
 
 * :code:`bbs.conf` - key startup settings
 
 * :code:`mail.conf` - Email configuration
 
-* :code:`menus.conf` - BBS menus, menu items and options. **This is the heart of LBBS configuration.**
-
-* :code:`mod_asterisk_ami.conf` - Asterisk Manager Interface
-
-* :code:`mod_asterisk_queues.conf` - Asterisk queues integration
+* :code:`menus.conf` - BBS menus, menu items and options.
 
 * :code:`mod_auth_mysql.conf` - MySQL/MariaDB auth provider module config
 
-* :code:`mod_auth_static.conf` - Static user configuration (intended for development and testing)
-
-* :code:`mod_chanserv.conf` - ChanServ IRC service config
-
-* :code:`mod_discord.conf` - Discord/IRC relay configuration
-
-* :code:`mod_events.conf` - Decoupled event handler configuration
-
 * :code:`mod_mail.conf` - General email server configuration
 
-* :code:`mod_oauth.conf` - OAuth2 token configuration
-
-* :code:`mod_irc_client.conf` - IRC client configuration
-
-* :code:`mod_irc_relay.conf` - IRC/IRC relay configuration
-
-* :code:`mod_slack.conf` - Slack/IRC relay configuration
-
-* :code:`mod_smtp_fetchmail.conf` - SMTP remote message queue management
-
 * :code:`mod_smtp_filter_dkim.conf` - DKIM signing
 
-* :code:`mod_smtp_filter_dmarc.conf` - DMARC verification and reporting
-
-* :code:`mod_smtp_mailing_lists.conf` - Mailing list configuration
-
 * :code:`modules.conf` - module loading settings (to disable a module, you do it here)
 
-* :code:`net_finger.conf` - Finger protocol config
-
-* :code:`net_ftp.conf` - FTP (File Transfer Protocol) server config
-
-* :code:`net_gopher.conf` - Gopher server config
-
-* :code:`net_http.conf` - HTTP/HTTPS web server config
-
-* :code:`net_imap.conf` - IMAP4 server config
-
-* :code:`net_irc.conf` - Internet Relay Chat server config
-
-* :code:`net_msp.conf` - Message Send Protocol config
-
-* :code:`net_nntp.conf` - Network News Transfer Protocol (NNTP) server config
-
-* :code:`net_pop3.conf` - POP3 server config
-
-* :code:`net_rlogin.conf` - RLogin server configuration
-
 * :code:`net_smtp.conf` - SMTP server configuration
 
 * :code:`net_ssh.conf` - SSH and SFTP server configuration
 
-* :code:`net_telnet.conf` - Telnet server configuration
-
-* :code:`net_ws.conf` - WebSocket server configuration
-
 * :code:`nodes.conf` - Node-related configuration
 
 * :code:`tls.conf` - SSL/TLS configuration
 
 * :code:`transfers.conf` - File transfer configuration
 
-* :code:`variables.conf` - Global variable configuration
-
-Each sample config file documents all available options. Refer to the sample configs for more info about a file.
-
 Additionally, the MailScript rules engine uses a script file called :code:`.rules` in the root maildir and the user's root maildir for manipulating messages.
 A sample MailScript rules file is in :code:`configs/.rules` (though this is not a config file, but a sample rule script file).