How to Hide Siri in MacOS Sierra
Not a fan of Siri in Sierra ? The Siri icon appears in both the menu bar and the Dock, but thankfully OS X Daily indicates it’s easy to hide.
To hide the Siri icon, go to System Preferences> Siri and deselect Show Siri in Menu Bar. If you want the Siri icon to come out of the dock, just press and hold the icon and then drag it out of the dock to remove it. Siri will still work with the keyboard shortcut, but it won’t get in your way.
How to Hide the Siri Menu Icon on macOS | OS X Daily