Those files could be related to AVG Clear so in that case its not a big deal to leave them.If AVG Clear did not delete them there's a reason or so I would think.
I've deleted such entries using the same Everything app after uninstalling an AV without any problems but never did so for AVG. But first make sure those are all related to AVG only then at least create a system restore point and delete those entries.
I've deleted such entries using the same Everything app after uninstalling an AV without any problems but never did so for AVG. But first make sure those are all related to AVG only then at least create a system restore point and delete those entries.