[Libguestfs] [PATCH] daemon: proto: Remove pervasive but useless debugging messages.

[Richard W.M. Jones]

If you spend your time looking at libguestfs debugging output you'll
see many messages from the daemon main loop like this:

  guestfsd: main_loop: new request, len 0x54
  guestfsd: main_loop: proc 278 (mkfs) took 0.02 seconds

I don't think these messages really bring much value.  This commit
removes them entirely.

An alternative might be to change them to make them shorter and/or
less useless, but I'm not sure what that would be.

Rich.