So I have programs that launch upon reboot automatically. However I want some of the items that hence appear in the menu bar in high sierra removed! I tried pressing the command button and dragging the icon away from the menu bar but it keeps bouncing back to the menu bar! How do I remove any item from the menu bar once and for all? Thanks!
In general the control for the presence of a menu extra is in that feature's preferences, which you can usually get to from that menu. For example the Wi-Fi menu has "Open Network Preferences..." where you'll find the "Show Wi-Fi status in menu bar" checkbox. The Command-drag just lets you reorder them.
Some 3rd party apps that start upon login place themselves into the menu bar and their preferences don't have any section of placement in menu bar. :-(
Hold the Command key and you're able to drag any of the Menu Bar icons. You can also drag them out of the Menu Bar to remove them.
consider checking out https://www.macbartender.com i love this app (i have it on both of my macs); gives me control over the icons in the menubar; i keep most hidden (except, of course, what i want to see). app has some good options, too...
When I do this under 10.13.4 they just snap back in place when I drag them off the menu bar with Command key pressed. Unless this is app specific and it works for some I did not try...