Your question isn't quite clear. If you uninstall something, the icon is uninstalled too.
The Play store doesn't uninstall apps, it only installs them. Settings/Apps uninstalls them.
This app totally hijacked my Mom's phone. Go into settings, then apps. Scroll down until you find the emoji phone app. Click on it. Clear cache. Clear data. Then, uninstall.I tried to uninstall it and now the icon is gone. Do not see it in security option. I tried to go to the play store and there was no option to uninstall it.