4.4.x TOPOS code/documentation mismatch for mask_callid

[Doranku]

Documentation for TOPOS module mentions the option to mash the Call-ID header.

This doesn't work and the reason is simple since it isn't implemented in modules/topos/tps_msg.c:
// ts_mask_callid(&msg);

ts_mask_callid doesn't exists, so for the time being removing the mask_callid from documentation might be a good idea.

[miconda]

Indeed, it is not implemented yet -- it was left there because the module aims to be in pair with topoh. I will add relevant note in docs about it.