These files should be deleted during the uninstalling process. In your situation, the files were not deleted. To delete these files manually, first delete the shortcut running a Tray Icon of EmEditor. Then follow the instructions found in
Q. How can I remove the EmEditor tray icon permanently?
If you find the EmEditor tray icon running on your Taskbar, close it by selecting Close Tray Icon. You can then delete emedtray.exe and emedres.dll.
Send feedback on this topic to Emurasoft