No, transport no longer required.
Once you have a good streamer and DAC there will be no use for those FLAC files other than backup in case the wifi goes out.
After a couple years I started to get rid of all my CDs as well.
If I rip all my CD's to flac files do I still need a CD transport?
I'm in the process of ripping all my CDs to .flac files with Exact Audio Copy. If I see a verified rip with no errors, is there any point in considering upgrading my CD player? Would I be better investing is a quality streamer and DAC?