Given this language in the release notes for CF2018u15 at https://helpx.adobe.com/coldfusion/kb/coldfusion-2018-update-15.html:

LOG FILES PAGE IN COLDFUSION ADMINISTRATOR

In the list of log files, the buttons to View, Download, and Delete a log file have been removed. Also, the log files are no longer clickable.

… what is the recommended means of getting access to or deleting one of the CF log files?

I've got them configured to load to a share, and then deal with the raw text files rather than messing with it through the cf admin.

We don’t have the option of shared drives/folders in our server environment. We do quite a bit of diagnostic logging, particularly in our testing environment, and rely on access to the logs as well as the ability to delete a log file when we’re done with them there just to keep that list clean. I’m trying to figure out how this might work going forward in our environment as we don’t have filesystem access to that portion of the server when remoted in to get to the CF admin. Going to be interesting.

@rstewart same, more or less. It's "odd" that when this solution to whatever problem it is that they're trying to solve was proposed, they didn't get as far as coming up with a solution for the problem the solution creates. I wonder if there was a beta, or end-user testing, devs in this case.

There's some discussion about this in the thread https://cfml.slack.com/archives/C06TABBT8/p1665501468420899