No, I would advise against it, unless you feel something is wrong & that you have less space that you should, then it should be investigated by TAC.
Both logs & their log-Indexes are symbolically linked to previous version's folder (R80.x only).
R80.40 to R80.30 to R80.20 to R80.10, I'd assume in your-case.
meaning the actual space is still taken up by the previous version, allowing you to query your logs from R80.30 & R80.x.
The log-maintenance mechanism either daily configured (which you probably did not configure) or the min threshold knows to delete these, once they are needed.
Configured on the relevant object via Logs > Storage: 'Delete older files when threshold is below X' (by default: threshold = only below 5GB in Logs partition (/var/log/).
as most of the space I see here are the log-files & log-Indexes of existing R80.40 version and the relatively small amount of space taken-up by older R80.x versions suggests these were already deleted in proper order of oldest 1st, as it should, according to the threshold I've explained.
*Only the 334M = /var/log/opt/CPSmartLog-R77 is excluded due to being an Older I/S of R77.x.
This can be deleted safely, but it's not significant.
