You don't need root, just adb so I'l be assuming you know how to use it, there are plenty of tutorials all over the forum about it.
The command you want to use to disable, for example, the Bluetooth and WiFi icons:
adb shell settings put secure icon_blacklist bluetooth,wifi
managed_profile ime sync_failing sync_active cast location bluetooth powersavingmode earphone nfc tty speakerphone zen mute volume wifi cdma_eri data_connection phone_evdo_signal phone_signal battery alarm_clock secure clock volte_call eyes_protect
adb shell settings put secure icon_blacklist bluetooth,nfc,eyes_protect,alarm_clock
How it looks (Stock Android 8.1, EMUI 8.1, Microsoft Launcher):