[HTC One S] Rapier:
Go to Settings - Resurrection Settings and you'll have there a switch to turn off navigation bar (I think it's in "Interface" but I don't remember exactly)

Sent from nowhere over the air...

EDIT: OK so I've flashed it to test and I'll stay awhile on this ROM to see how that memory commits are reflected in the day-to-day usage. First impressions:

- ROM is fluid and fast, seems to suffer less from that "memory leak" bug. Apps are switching fast, I had no "minimizing app" bug and also I haven't been thrown to recents screen as if I have pressed the recents button (it was happening from time to time on other ROMs). While this is not a prof that those issues are solved (I don't even expect this to happen so soon), it's an improvement that can be seen. I'll see if in time the problems reoccurs or it'll stay like this

- ROM is clearly designed to be optimized for devices with bigger screen (I'll say a 5" cause it's a "standard" these days) and without hardware nav buttons. This is due to the presence of the nav bar already activated (to deactivate go to Settings - Resurrection Tools - Interface) and also due to the smaller font used in parts of the interface like battery level, network traffic, weather conditions in notification. On a 5" display for sure that font dimension would be appropriate but on our 4.3" it's too small...it's so small that even with font size set to "huge" some people might have problems reading those texts. So this is a note to that kind of users.

- it is the first LP ROM in which the battery text level in status bar is properly fixed. It might be due to the fact they changed in the code to make the smaller font I don't know, but the bug isn't present. For those that dunno what I'm saying, all LP ROMs have the following bug: if "text" only is selected as battery display, the percentage is displayed on status bar only till the first restart. After a restart both the "standard" icon AND the text are shown (all other battery icon options works OK, the issue is only present for the "text" option). It should only be shown the text. Well this is the first ROM in which the correct setting is preserved after a reboot.

- there is an integrated superuser app somewhere but don't ask where and which one. By the pop-up is neither superuser nor superSU. It's doing the job anyways, you should just enable root for apps or apps/ADB in Developer Options. As an added thing in Settings - Resurrection Tools - Interface - Status bar, there is an option to activate an icon to be visible in status bar (#) when a superuser session is active.

- this is also the first LP ROM I test in which custom icons for lockscreen shortcuts are working properly. In all other ROMs, selecting a custom icon was either not displaying it or not allowing to select an image from gallery at all (I was getting an error saying that the image cannot be cropped or something like this).

- button lightning setting doesn't seem to work...at least for me. Setting the backlight timeout for the hardware buttons to 30 secs or to always enable doesn't do anything, buttons turn off after 5 secs regardless of the setting.

More things after more testing, that's all for now that I remember