If it bothers you and you want to know that not a single trace of it or anything else that may have been installed with that Android emulator is absolutely, positively gone I would suggest wiping the drive and doing a clean install of macOS.
I did that once in the Windows world after installing a game that had the infamous StarForce DRM. I wanted to be absolutely certain that I had a clean system after that little disaster which as I recall was brought upon me by the wonderful folks at Ubisoft who have such a deep, abiding love for their PC games customers. That was a real pain in the rear with Windows but it was necessary in that case.
Thank you for the suggestions, I had pondered a full wipe but DetectX seems to have gotten even the invisible files out, other search utilities can find no further trace of it. I have changed my main passwords for e-mail and such just in case too. I figure I will just wait and see but for now every PID and other such processes have been normal and my bandwidth has been normal also.
I too have awful memories of the windows world so I hate these feels.