How to remove contact picture from "Myself" contact?

[AC Question]

I have an Xperia Z1 compact smartphone, running Android version 4.4.4. My account is synced with Google Plus. Recently I changed the profile picture of my Google Plus account, after which I removed it. However, the Google Plus profile picture remains as the picture of the "Myself" contact in my phone contacts! I have found no ways to remove it, only swap it with another picture. Apps haven't been able to help and I don't know what to do.

Is there no way to leave the "Myself" contact with a blank, unset profile picture? And if so - how?