After the most recent update, I noticed that the ability to modify your 'Frequently Contacted' list within your contacts section has been removed. It used to allow to remove or otherwise change that list and now the option is no longer located in the additional options if you click on the top right dots to get to settings. Was wondering if a ticket could be submitted to correct this issue?
I found your question when I was looking for a way to clean up (remove some names) from the Frequently Contacted list. I found another question posted about this and the answer suggested was to simply turn off the feature. But I wanted to be able to leave a few contacts to access quickly, not turn off the list completely. So I thought I would do a little testing and found I could do exactly what I wanted. I posted what I found there.
Please review that and see if that's what you are looking for or not.