Cleanup : Remove postgreSQL-support (not used and has also been broken for a long time)

--HG--
branch : trunk

src/trinityrealm/trinityrealm.conf.dist

@@ -8,7 +8,6 @@
 #    LoginDatabaseInfo
 #        Database connection settings for the realm server.
 #        Default:
-#                ---MYSQL---
 #                    hostname;port;username;password;database
 #                    .;somenumber;username;password;database
 #                     - use named pipes in Windows
@@ -16,11 +15,6 @@
 #                        "enable-named-pipe" to [mysqld] section my.ini
 #                    .;/path/to/unix_socket;username;password;database
 #                     - use Unix sockets in Unix/Linux
-#                ---PGSQL---
-#                    hostname;port;username;password;database
-#                    .;/path/to/unix_socket/DIRECTORY or . for default path;
-#                            username;password;database
-#                     - use Unix sockets in Unix/Linux
 #
 #    LogsDir
 #        Logs directory setting.