Can I safely remove the QuarantineRoot folder? in El Capitan there is a nice folder called QuarantineRoot (the Ars review on this matter) that contains stuff that was in /usr in Yosemite but had to be moved (because /usris now protected by SIP).  

/Library/SystemMigration/History/Migration-(some UUID)/QuarantineRoot/


Can I safely delete it?  I sorted the symlinks to texbin that are there, reinstalled Prey etc... is there any risk of a snafu later on?
I see to have posted a duplicate of Can I delete /Library/SystemMigration, so I consider this question closed.