I have removed some of my strmlnk files from the file system. How do I refresh Channels DVR to get those removed items out of Channels DVR?
I'm guessing here since I don't use streamlinks, but have you tried Local Content>Maintenance>Prune Deleted?
next time just trash them from Channels.
Good guess, this is actually what works 100% for manually deleted Stream Links!
But I agree with @maddox. You can delete them in the front end and when your Trash purges it will delete the file, too. I forget when exactly is started working this way, but it was in one of the previews a couple of months back.