Removed special code for 21 UTC files

In the field, days were split into 24hours starting at 21UTC. This is no
longer the case, so the code used to read those planelog files has been
removed.

Signed-off-by: Jenny Fisher <jennyf@hpc.its.uow.edu.au>
Updated tracerinfo.dat to reflect rerun simulation.

Signed-off-by: Jenny Fisher <jennyf@hpc.its.uow.edu.au>
Merge branch 'master' of github.com:ngc2244/SEAC4RS-IDL