mod_openid, mod_json_streams: Remove modules depending on obsolete net.httpserver API These have not been updated for a long time and do not work with Prosody versions from recent years, which is a good indication they are not being used.

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summary: Log a message once per minute
...

This module sends `-- MARK --` to the log once per minute. This may be
useful to give a sense of how busy the server is or see that logging and
timers are still working.